Press Releases

The endotoxin result for Epithalon 10 mg lot CBR-E10-260411-001 is 13.4 EU per vial against a threshold of 40 EU per vial, 34 percent of the limit. For the 10 mg fill, that equals 1.34 EU per milligram.

ALBANY, N.Y., Oct. 22, 2026 — Crescent Bioresearch, a supplier of laboratory compounds, has published the Epithalon certificate of analysis for lot CBR-E10-260411-001. The endotoxin result is 13.4 EU per vial against a threshold of 40 EU per vial. The vial holds 10 mg, so the result is 1.34 EU per milligram.

Epithalon, also known as Epitalon, Epithalone and AEDG peptide, sequence Ala-Glu-Asp-Gly, CAS 307297-39-8, is supplied by Crescent Bioresearch as Epithalon 10 mg for laboratory research.

The Epithalon page

BTLabs, an independent laboratory in West Palm Beach, Florida, tested the lot on June 16, 2026, using the gel-clot Limulus amebocyte lysate (LAL) test under USP General Chapter 85, Bacterial Endotoxins Test. Endotoxin, the lipopolysaccharide of Gram-negative bacteria, is reported by that test in endotoxin units (EU). The page gives a result of 13.4 EU per vial, a threshold of 40 EU per vial, a sensitivity of 0.25 EU/mL, a test volume of 3 mL and a determination of PASS. The result stands at 34 percent of the threshold.

One result, more than one limit

The threshold on the certificate is the laboratory’s. A research entity may hold its work to a different limit. Against the laboratory’s 40 EU per vial, the lot passes with 26.6 EU to spare. Against a stricter limit of 20 EU per vial, it passes with 6.6 EU to spare. Against a limit of 10 EU per vial, it does not pass.

A determination of PASS answers only the first of those three comparisons. The measured value answers all three.

What the figures convert to

The result divided by the fill is 13.4 EU over 10 mg, or 1.34 EU per milligram. The threshold converts the same way, to 4 EU per milligram for this fill. In the 3 mL test volume, the result is a concentration of about 4.5 EU per mL. Each figure is labeled on the Epithalon annotated endotoxin report.

“A pass compares a result with one limit,” Crescent Bioresearch said. “The measured value can be compared with any limit a research entity applies to its own work.”

SOURCE DOCUMENTS

Bacterial Endotoxins Test report IF-824-QSA-TR006-BTL26742-01, issued by BTLabs, West Palm Beach, Florida, for Epithalon lot CBR-E10-260411-001, tested June 16, 2026, by gel-clot LAL; USP General Chapter 85, Bacterial Endotoxins Test.

ABOUT CRESCENT BIORESEARCH

Crescent Bioresearch is a supplier of laboratory compounds, founded around a framework of critical assessment. It works with research entities nationwide in pursuit of preserving the integrity of scientific research through its transparency approach. Follow the Crescent Discovery Series to dive into the latest breakthroughs and findings within prominent literature.

Find Crescent Bioresearch on Instagram, TikTok, X and Facebook, and every certificate we publish, at crescentbioresearch.com/links.

Epithalon 10 mg product page (for research entities): crescentbioresearch.com/epithalon-10mg

Media Contact:
Name: Media Relations
Company: Crescent Bioresearch
Email: media@crescentbioresearch.com
Website: https://crescentbioresearch.com/links

TicketGlide Travel Tickets combines tickets for more than 400,000 tours, attractions and activities with fact-checked guides that set the options side by side and say which one to book.

CHEYENNE, Wyo. – October 24, 2026 – TicketGlide, an all-in-one travel comparison and tickets platform, now offers tickets for more than 400,000 tours, attractions and activities worldwide, from attraction tickets and guided tours to day trips, food tours, cruises and shows.

Each TicketGlide guide presents the options differently from a standard listing. Rather than a long list of similar options, each TicketGlide guide compares the main ways to visit an attraction: a standard ticket, a guided tour, a combo pass or visiting independently. It explains who each one suits, how long it takes and what it costs, with live prices in the traveller’s own currency, and it says which option to book, including when going independently is the better choice.

The guides are written and reviewed by the TicketGlide Editorial Team and checked against official sources, covering opening hours, booking windows, transport times and common mistakes. Every guide lists its sources and the date its facts were last checked. City guides cover Sydney, London, Paris, Rome, New York, Tokyo, Barcelona and Las Vegas, in English, French, German and Spanish.

For the tours a guide compares, short AI-assisted summaries of recent traveller reviews show what people liked and what concerned them, alongside each tour’s rating. Original travel videos filmed on the team’s own visits start with Sydney; the Sydney Opera House guide includes one, with chapter links to each part of the visit.

According to TicketGlide, free cancellation is available on most experiences, and many can be reserved now and paid for later.

“Travellers don’t need more listings – they need someone to tell them which one is worth their money and time,” said Karen Young, co-founder of TicketGlide. “We go, we check the official sources, and we put the answer first.”

New in-depth guides are added every week, with Sydney, London, Paris, Tokyo and New York first.

About TicketGlide

TicketGlide (ticketglide.com) is an all-in-one travel comparison and tickets platform for attractions, tours, day trips and local experiences worldwide, operated by Mubboo LLC.

Media Contact:
Name: Karen Young
Company: TicketGlide Travel Tickets
Email: support@ticketglide.com
Phone: +1 307 221 2764
Website: https://ticketglide.com

Analysis of 114 brands shows over half plan to test the new market by shipping from home for at least six months, exposing them to duties, slow delivery and disappearing margins

London, October 2026 – The UK and US remain each other’s most natural expansion markets, yet new data from FulfilQ.com, the global logistics matching platform, shows that brands moving in either direction routinely underestimate what it takes to get logistics right.

FulfilQ analysed conversations between Logan, its AI Logistics Assistant, and 114 ecommerce brands, 67 based in the US and 47 in the UK. Of those, 65% were actively planning an expansion across the Atlantic. Yet 84% of the brands planning a move had not worked out their landed cost per order, and 52% intended to test the new market by shipping from their home country for at least six months, often without realising how that would affect delivery times, duties and customer experience.

UK brands expanding into the US

The biggest shift catching UK brands out is the end of the US de minimis exemption. Shipments that once entered duty free under $800 are now subject to duties and tariffs, so shipping parcels direct from the UK has become considerably more expensive and less predictable. Brands that haven’t priced this in often find their US margins disappear.

Delivery expectations are the second hurdle. American shoppers expect fast, free delivery across a country where coast to coast ground shipping can take a week from a single warehouse. Many UK brands start with one US location and find a split network, typically one facility on each coast, is the only way to compete.

Sales tax is the third. Unlike UK VAT, US sales tax is set state by state, and brands can trigger obligations in individual states once sales pass local thresholds. Add generous US returns expectations and a fragmented carrier market, and the cost of getting it wrong builds quickly.

US brands expanding into the UK

For US brands, the most common mistake is assuming the UK is a gateway to Europe. Since Brexit, the UK and EU are separate customs territories, so stock held in a UK warehouse cannot move freely into the EU without further duties, paperwork and often a second warehouse.

UK VAT is the next surprise. On orders up to £135, the seller rather than the customer is responsible for collecting VAT at the point of sale, which means registering for UK VAT before trading. Brands also need an EORI number to import goods, and some products require UK specific compliance such as UKCA marking.

Customer expectations differ too. UK shoppers are used to next day delivery as standard, and statutory rights give them 14 days to cancel most online orders, so a reliable UK returns process is essential rather than optional.

Ian Spencer, Founder of FulfilQ, said: “Having led more than 70 international market entries, I’ve seen the same pattern repeatedly. Brands focus on marketing and demand, then treat logistics as a detail to sort out later. In reality, where you fulfil from, how you handle duties and tax, and whether you can meet local delivery expectations decide whether the expansion succeeds or fails. The good news is that these are all solvable problems if you plan for them before you launch, not after.”

Getting it right

FulfilQ matches brands with vetted logistics providers in the UK, USA, Europe and Australia based on operational fit, including 3PLs, freight forwarders and customs specialists experienced in transatlantic expansion. Brands can submit a free RFP and are only matched with providers scoring above 80% operational fit, or ask Logan directly. A dedicated UK to US expansion cost calculator is also coming soon.

Brands planning a move across the Atlantic can visit fulfilq.com to submit an RFP or ask Logan.

Methodology: FulfilQ analysed anonymised conversations between Logan and 114 ecommerce brands (67 US based, 47 UK based) between August and October 2026. 65% (74 brands) were planning a UK to US or US to UK expansion.

About FulfilQ
FulfilQ.com is a global logistics directory and matching platform connecting ecommerce brands, retailers and enterprises with vetted logistics providers based on operational fit. Free for brands to use, FulfilQ operates across the UK, USA, Europe and Australia, with a network of 200+ providers and Logan, its embedded AI Logistics Assistant, helping brands find the right partner in minutes.

Media Contact:
Name: Ian Spencer
Company: FulfilQ
Email: ian@tryfulfilq.com
Website: https://fulfilq.com/

The Boxery, a Lyndhurst, NY packaging supplier, reviews how the 22x22x12 box helps e-commerce sellers right-size packaging for mid-large items, cut void fill use and support waste-reduction goals.

LYNDHURST, NY — The Boxery, an online packaging supplier based in Lyndhurst, New York, has published a review of the 22x22x12 box and its role in right-sizing packaging for mid-to-large e-commerce orders. The review explains how matching a carton more closely to the product can reduce the amount of void fill needed and support waste-reduction goals in shipping operations.

Right-sizing has become a recurring topic for online sellers as parcel volumes grow and packaging waste draws more attention. The U.S. Environmental Protection Agency reports that containers and packaging make up a substantial share of municipal solid waste in the United States, and corrugated cardboard is among the largest single categories. Sellers shipping bulky goods often default to oversized cartons, leaving empty space that must be filled with paper, air pillows, or other cushioning.

The review describes the 22x22x12 box as a mid-large carton with a square footprint and a shallow 12-inch height. That shape suits flatter or wider items, including small appliances, bundled apparel, framed décor, cookware sets, and multi-item orders that do not need a tall carton. Choosing a height close to the product’s own depth can limit unused space above and around the item.

The Boxery notes that the carton is a single-wall corrugated option made with recycled content, and that it is one of more than 1,000 box sizes the company keeps in stock. The company says a broad size range lets sellers compare dimensions against actual product measurements rather than relying on a nearby size. Heavier or more fragile goods may require double-wall construction, and the review advises sellers to confirm weight ratings before choosing a carton.

“Many sellers only look at length and width, but height is where a lot of wasted space comes from,” said The Boxery owner. “A 22x22x12 box gives sellers with wider, lower-profile products a way to reduce empty volume, and that usually means less void fill to buy, store, and eventually discard.”

About The Boxery: The Boxery is an online packaging supplier headquartered in Lyndhurst, New York. The company sells corrugated boxes, mailers, shipping supplies, and janitorial products to ecommerce sellers, retailers, movers, and individual customers, and ships from multiple warehouses across the United States.

Ecommerce sellers evaluating carton sizes for wider, lower-profile products and looking to reduce void fill can review The Boxery’s 22x22x12 box and related corrugated options at The Boxery – 22X22X12 Box.

Media Contact:
Name: Owner of The Boxery
Company: The Boxery
Email: info@theboxery.com
Phone: 8778269379
Website: https://www.theboxery.com/

Dual Restoration, based in Brooklyn, NY, explains how IICRC certifications provide a verifiable standard for Pennsylvania businesses when selecting a commercial restoration company following fire, water, or mold damage.

BROOKLYN, NY — Dual Restoration announced that its restoration team holds certifications from the Institute of Inspection, Cleaning and Restoration Certification (IICRC), and published an explanation of why credentialed standards matter when businesses evaluate a commercial restoration company Pennsylvania property owners may need after fire, water, or mold damage. The company is licensed and insured in Pennsylvania, New York, New Jersey, and Connecticut.

Commercial property damage often forces a quick decision. Building owners, facility managers, and landlords frequently must choose a contractor within hours of a loss, often while insurance claims are being opened and tenants or staff are displaced. The IICRC is a nonprofit standard-setting and certification body for the cleaning, inspection, and restoration industries, and its published standards are widely referenced in water damage and mold remediation work. Contractors cannot verify their qualifications through price or speed alone, which is why third-party credentials are one of the few objective measures available during an emergency.

IICRC certification is earned through coursework and examination in specific disciplines, such as water damage restoration, fire and smoke restoration, and applied microbial remediation. Holding these credentials indicates that technicians have been trained on recognized procedures for assessing moisture, containing affected areas, drying structures, and documenting conditions. Dual Restoration states that its team applies these procedures across the services it provides to commercial buildings, multi-family housing, and healthcare facilities.

The company’s Pennsylvania work covers water mitigation, fire and smoke remediation, mold remediation, sewer cleanup, odor removal, board-up and tarping, biohazard cleanup, and large-loss restoration. Dual Restoration reports 24-hour emergency availability, with a typical response time of 60 minutes or faster, and says it coordinates directly with insurance adjusters. Documented procedures can matter in claims, since adjusters generally review moisture readings, photographs, and scopes of work when evaluating a loss.

“Certification gives a business owner something concrete to verify before work begins,” said Press Relations for Dual Restoration. “When a property is down, the owner should be able to ask which standards the crew follows, confirm the credentials, and expect the work to be documented from the first call through final repair.”

About Dual Restoration: Dual Restoration is a property restoration company headquartered in Brooklyn, New York. It provides emergency and full-service restoration for commercial properties, multi-family buildings, and healthcare facilities, and serves New York City, New Jersey, Connecticut, Pennsylvania, Florida, and Texas. The company is IICRC certified and handles insurance coordination as part of its restoration process.

Pennsylvania business owners and property managers comparing credentials when selecting a commercial restoration company can review Dual Restoration’s certifications and service details at Dual Restoration – Commercial Restoration Company Pennsylvania.

Dual Restoration
5308 13th Ave Ste 615, Brooklyn, NY 11219
(347) 309-7119
Google Business Profile

Media Contact:
Name: Press Relations
Company: Dual Restoration
Email: office@dualrestoration.com
Phone: 3473097119
Address: 5308 13th Ave Ste 615
Website: https://www.dualrestoration.com/

Prime Window Cleaning has opened fall bookings in Brooklyn for a pre-winter exterior glass and gutter care service, giving homeowners a way to schedule affordable window cleaning nyc before cold weather limits outdoor work.

BROOKLYN, NY — Prime Window Cleaning has opened fall bookings for a pre-winter exterior glass and gutter care service for Brooklyn homeowners. The seasonal service pairs exterior window washing with gutter cleaning in a single visit and is designed to help residents arrange affordable window cleaning in NYC before low temperatures make outdoor work harder to schedule. The company now offers appointments at its Brooklyn location.

Autumn is a common time for exterior maintenance in the Northeast, because falling leaves collect in gutters and freezing temperatures can interfere with cleaning and repair work. The National Weather Service notes that freeze-thaw cycles in the region are typical from late fall through early spring. During that period, clogged gutters can allow water to back up near rooflines, entryways, and foundations, which is why many property owners schedule gutter work before the first hard freeze.

The new fall service combines two tasks that homeowners often arrange separately. Crews clean exterior glass on single-family homes, townhouses, and low-rise residential buildings and clear leaves and debris from gutters during the same appointment. Combining the work reduces site visits and the coordination required from the homeowner.

Prime Window Cleaning uses equipment matched to each property’s height and access conditions, including tall ladders, bucket trucks, and rooftop access gear when a building requires it. Customers can book a single seasonal visit or set up a recurring schedule, such as once or twice a year. The company also offers related exterior services, including pressure washing and light fixture cleaning, which customers can add to a visit when requested. The service covers Brooklyn and the surrounding boroughs, Long Island and New Jersey.

“Many homeowners wait until the first cold snap to think about their windows and gutters, and by then the schedule is tight, and conditions are harder to work in,” said Press Relations, Head of Communications of Prime Window Cleaning. “Opening bookings in the fall gives residents time to plan the work while the weather still allows it, and to combine tasks that would otherwise need separate appointments.”

About Prime Window Cleaning: Prime Window Cleaning is a residential and commercial exterior maintenance company based in Brooklyn, New York. Founded in 2002, the company provides window cleaning, gutter cleaning, gutter protection, pressure washing, light fixture cleaning, and related services across New York City, Long Island, and New Jersey. Its office is open Monday through Saturday, and it responds to after-hours messages the following business day.

Brooklyn homeowners planning pre-winter window and gutter maintenance can review the fall service options from Prime Window Cleaning at Prime Window Cleaning – Affordable Window Cleaning Nyc.

Prime Window Cleaning
155 34th St., Brooklyn, NY 11232
(718) 496-4535
Google Business Profile

Media Contact:
Name: Press Relations
Company: Prime Window Cleaning
Email: ask@primewindowcleaning.com
Phone: 7184964535
Address: 155 34th St.
Website: https://primewindowcleaning.com/

The Boxery, a Lyndhurst, NY packaging supplier, examines how colored poly mailer bags help subscription box and direct-to-consumer brands build a consistent, branded unboxing experience without custom printing.

LYNDHURST, NY — The Boxery, an online packaging supplier based in Lyndhurst, New York, today published an analysis of why subscription box and direct-to-consumer (DTC) brands increasingly choose colored poly mailer bags for outbound shipments. The review explains how a solid, coordinated color can give a package a recognizable identity without custom printing, and it outlines the practical factors shippers weigh when choosing between mailer styles.

The analysis arrives as e-commerce shipping continues to shape how brands present themselves to customers. According to the U.S. Census Bureau, e-commerce accounted for roughly 16 percent of total U.S. retail sales in recent quarterly reports, meaning a growing share of first impressions now happen at the doorstep rather than in a store. For subscription companies that deliver on a recurring schedule, the outer package is seen repeatedly, making visual consistency a recurring consideration.

Poly mailers are lightweight, flexible shipping envelopes made from polyethylene film, commonly used for apparel, accessories, soft goods, and other items that do not require a rigid box. The Boxery’s review notes that colored versions, available in shades such as black, white, pink, blue, and metallic finishes, allow a brand to choose one signature color and use it across every shipment. Because the color is built into the film, no additional printing step or artwork approval is needed before an order can be fulfilled.

The review also covers functional characteristics that influence adoption. Poly mailers generally weigh less than corrugated boxes, which can reduce dimensional weight considerations for carriers, and they ship and store flat, saving warehouse space. Most styles include a self-sealing adhesive strip, and many use opaque film to keep contents private in transit. The Boxery notes that shippers should match film thickness, measured in mils, to the product’s weight and sharpness.

“Subscription brands tell us they want every delivery to look familiar the moment it reaches the customer, and a consistent color is one of the simplest ways to do that,” said The Boxery’s owner. “Colored poly mailer bags let a business standardize its look across thousands of shipments while keeping packaging straightforward for the warehouse team.”

About The Boxery: The Boxery is an online packaging supplier headquartered in Lyndhurst, New York. The company sells shipping, packaging, and janitorial supplies to e-commerce sellers, retailers, and individual customers, with products stocked across multiple U.S. warehouses. Its catalog includes corrugated boxes, mailers, and related shipping materials.

Subscription box operators and DTC brands comparing colored poly mailer bags for apparel, beauty, or accessory shipments can review The Boxery’s available mailer colors, sizes, and film options at The Boxery – Colored Poly Mailer Bags.

Media Contact:
Name: Owner of The Boxery
Company: The Boxery
Email: info@theboxery.com
Phone: 8778269379
Website: https://www.theboxery.com/

The endotoxin certificate for Semax lot CBR-SMX-260403-001 reports 15.5 EU per vial against a threshold of 40 EU per vial. It carries the lot number, report number, test date, sample description and laboratory signatures that tie the result to the vial.

ALBANY, N.Y., Oct. 22, 2026 — Crescent Bioresearch, a supplier of laboratory compounds, has published the Semax certificate of analysis for lot CBR-SMX-260403-001. The endotoxin result is 15.5 EU per vial against a threshold of 40 EU per vial. The certificate carries five entries that connect that figure to the vial it describes.

Semax, also known as MEHFPGP and ACTH(4-7)-Pro-Gly-Pro, sequence Met-Glu-His-Phe-Pro-Gly-Pro, CAS 80714-61-0, is supplied by Crescent Bioresearch as Semax 10 mg for laboratory research.

The endotoxin line

BTLabs, an independent laboratory in West Palm Beach, Florida, tested the lot on July 30, 2026, with the gel-clot Limulus amebocyte lysate (LAL) test under USP General Chapter 85, Bacterial Endotoxins Test. Endotoxin is the lipopolysaccharide that forms the outer layer of Gram-negative bacteria, and the test counts it in endotoxin units (EU). The 10 mg vial was dissolved in 3 mL and measured 15.5 EU per vial against a 40 EU per vial threshold, with a lysate sensitivity of 0.25 EU/mL, and passed. The result equals 1.55 EU per milligram and stands at 39 percent of the threshold.

Five entries that tie the number to the vial

The lot number. The page names lot CBR-SMX-260403-001, and the vial label carries the same lot number. If the two do not match, the certificate does not describe the vial.

The report number. The page is report IF-824-QSA-TR006-BTL261029-06, a reference that identifies this document and ties it to the laboratory that issued it. A screenshot or a row in a supplier’s table carries no report number.

The test date. The test was performed July 30, 2026, and the date separates this result from any earlier or later test on the same lot.

The sample description. The laboratory recorded a small clear vial, white sample, silver crimp and white plastic cap, and a research entity can hold its vial next to that description.

The issuing laboratory and signatures. The page names BTLabs, gives its address and is signed by two of its scientists. A result with no identified issuer cannot be verified with anyone.

What the five entries do

Endotoxin certificates circulate as images, as rows in summary tables and as files copied from one product listing to another. A number cut loose from its lot looks exactly like a genuine one, and a certificate copied onto the wrong product, or left online after its lot has sold out, is wrong in a way that nothing on its face reveals. The five entries above are the means of telling. The Semax certificate carries all five.

A school exam shows the same thing

A teacher hands back a score sheet that reads “82, pass.” The passing mark is 65, but the sheet has no student name or ID on it. The score may be real, but no one can say whose exam it was. Without the name, the score cannot be tied to any student.

An endotoxin certificate works the same way. The Semax certificate carries the lot number CBR-SMX-260403-001, the same number printed on the vial. It also carries the report number, the test date and the laboratory’s signatures. Together these tie its result, 15.5 EU per vial against a threshold of 40, to that vial and no other.

Why the number itself must be there

Once the certificate is tied to the vial, the measured value is what the research entity uses. A result of 15.5 EU per vial can be compared with the threshold, converted to 1.55 EU per milligram, compared with other lots and held against the research entity’s own limit. A certificate that reports only a pass, even with every identifier correct, proves the right vial was tested and says nothing about what was found in it. The number, matched to the right vial, is what lets a research entity say its results came from Semax and not from endotoxin carried in with it. The Semax annotated endotoxin report marks these entries.

“A certificate that cannot be matched to the vial does not describe the vial,” Crescent Bioresearch said. “One that matches but carries no measured value does not describe the endotoxin.”

SOURCE DOCUMENTS

Bacterial Endotoxins Test report IF-824-QSA-TR006-BTL261029-06, issued by BTLabs, West Palm Beach, Florida, for Semax lot CBR-SMX-260403-001, tested July 30, 2026, by gel-clot LAL; USP General Chapter 85, Bacterial Endotoxins Test.

ABOUT CRESCENT BIORESEARCH

Crescent Bioresearch is a supplier of laboratory compounds, founded around a framework of critical assessment. It works with research entities nationwide in pursuit of preserving the integrity of scientific research through its transparency approach. Follow the Crescent Discovery Series to dive into the latest breakthroughs and findings within prominent literature.

Find Crescent Bioresearch on Instagram, TikTok, X and Facebook, and every certificate we publish, at crescentbioresearch.com/links.

Media Contact:
Name: Media Relations
Company: Crescent Bioresearch
Email: media@crescentbioresearch.com
Website: https://crescentbioresearch.com/links

Lot CBR-THY-260403 measured less than 5 EU per vial against a threshold of 350. Other Crescent Bioresearch certificates from the same laboratory carry a threshold of 40. Each says PASS, and the word takes its meaning only from the threshold printed beside it.

ALBANY, N.Y., Oct. 22, 2026 — Crescent Bioresearch, a supplier of laboratory compounds, has published the Thymalin certificate of analysis for lot CBR-THY-260403. The endotoxin result is less than 5 EU per vial and the threshold is 350 EU per vial. Some of the company’s other certificates, issued by the same independent laboratory, carry a threshold of 40 EU per vial, and every one of them says PASS. A pass is read against the threshold printed beside it.

Thymalin, also known as Thymalinum and Timalin, a thymus peptide complex, CAS 63958-90-7, is supplied by Crescent Bioresearch as Thymalin 10 mg for laboratory research.

The Thymalin page

BTLabs, an independent laboratory in West Palm Beach, Florida, tested the lot on Sept. 24, 2026, by the Limulus amebocyte lysate (LAL) test under USP General Chapter 85, Bacterial Endotoxins Test, which measures lipopolysaccharide, the endotoxin shed by Gram-negative bacteria, in endotoxin units (EU). The 10 mg vial was dissolved in 2 mL. The laboratory found less than 5 EU per vial, a result it notes is below the limit of detection, and compared it with a threshold of 350 EU per vial using a lysate with a sensitivity of 0.05 EU/mL. The lot passed, and the result is less than 0.5 EU per milligram.

A threshold is chosen

The threshold is neither part of the test nor a property of the compound. It is chosen. On the Thymalin page, the laboratory states its threshold was established under USP Chapter 85 guidance. On the company’s 40 EU pages, the same laboratory states a different basis for its threshold. Both approaches are drawn from pharmaceutical practice, and neither was written for the work a research entity does with a laboratory compound. The research entity decides what limit its own work requires, and it can do that only when the result is printed beside the threshold.

Two passes, two standards

Set the Thymalin certificate next to one carrying a 40 EU threshold and read only the word PASS on each. The two look identical and they are not. One lot cleared 350. The other cleared 40, a standard almost nine times stricter. For the Thymalin lot the difference changes nothing, because a result below 5 clears both. For a lot measuring 120 EU per vial, it would decide everything: a pass against 350 and a fail against 40, on the same vial, from the same test.

A speeding ticket shows the same thing

A driver is pulled over and handed a speeding ticket. The ticket says the driver was speeding, but it does not show the speed recorded or the speed limit on that road. The driver cannot tell whether the car was going 26 in a 25 zone or 60 in a 25 zone, and cannot check whether the ticket is right. A proper ticket prints both numbers: the speed recorded and the limit.

An endotoxin certificate that says only “pass” has the same problem. It gives the verdict without the two numbers behind it. The Thymalin certificate prints both: a result of less than 5 EU per vial and a limit of 350 EU per vial. The limit matters because limits differ. Other Crescent Bioresearch certificates from the same laboratory use a limit of 40, and a lot measuring 120 EU per vial would pass against 350 and fail against 40.

Why both figures are needed

A pass is a comparison of a measured value against a threshold. Without the value, the reader does not know what was found. Without the threshold, the reader does not know what it was compared against. A certificate missing either one cannot be taken as true data, because no one else can repeat the comparison.

For this lot, a research entity can see that the pass was against 350 and that the result was below 5, and can apply its own limit. It can also judge whether endotoxin at that level could play any part in what it observes, apart from Thymalin itself. The Thymalin annotated endotoxin report marks the threshold line.

“Pass is a verdict, and a verdict depends on the standard it was reached against,” Crescent Bioresearch said. “On this certificate the standard is 350 and the result is under 5. On others the standard is 40. A pass whose standard cannot be seen cannot be judged.”

SOURCE DOCUMENTS

Bacterial Endotoxins Test report COA261647-006, issued by BTLabs, West Palm Beach, Florida, for Thymalin lot CBR-THY-260403, tested Sept. 24, 2026, by LAL; the company’s current endotoxin certificates from the same laboratory; USP General Chapter 85, Bacterial Endotoxins Test.

ABOUT CRESCENT BIORESEARCH

Crescent Bioresearch is a supplier of laboratory compounds, founded around a framework of critical assessment. It works with research entities nationwide in pursuit of preserving the integrity of scientific research through its transparency approach. Follow the Crescent Discovery Series to dive into the latest breakthroughs and findings within prominent literature.

Find Crescent Bioresearch on Instagram, TikTok, X and Facebook, and every certificate we publish, at crescentbioresearch.com/links.

Media Contact:
Name: Media Relations
Company: Crescent Bioresearch
Email: media@crescentbioresearch.com
Website: https://crescentbioresearch.com/links

The endotoxin page for GHK-Cu lot CBR-GHK-260403-001 is annotated to label each figure: a result of 29.3 EU per vial, a threshold of 40 EU per vial, a lysate sensitivity of 0.25 EU/mL and a determination of PASS.

ALBANY, N.Y., Oct. 21, 2026 — Crescent Bioresearch, a supplier of laboratory compounds, has published the GHK-Cu certificate of analysis for lot CBR-GHK-260403-001 together with the GHK-Cu annotated endotoxin report. The lot measured 29.3 EU of endotoxin per vial against a threshold of 40 EU per vial and passed. The annotations label each figure on the page.

Prezatide copper (GHK-Cu), also known as copper tripeptide-1, glycyl-L-histidyl-L-lysine copper, Gly-His-Lys-Cu, Cu-GHK and GHK copper complex, CAS 89030-95-5, is supplied by Crescent Bioresearch as GHK-Cu 100 mg for laboratory research.

The four figures, labeled

Result: 29.3 EU per vial. This is the amount of endotoxin the laboratory measured in the vial. For the 100 mg fill, it equals 0.293 EU per milligram.

Threshold: 40 EU per vial. This is the limit the laboratory compared the result against. The page states the laboratory’s basis for the threshold. The result stands at 73 percent of it.

Lysate sensitivity: 0.25 EU/mL. This is the smallest concentration of endotoxin the test could detect. It describes the test rather than the vial.

Determination: PASS. This is the comparison of the result against the threshold. It contains no information that the two figures above it do not already contain.

How the lot was tested

Endotoxin is lipopolysaccharide, which Gram-negative bacteria carry in their outer membrane and shed into their surroundings. The Limulus amebocyte lysate (LAL) test under USP General Chapter 85, Bacterial Endotoxins Test, measures it. BTLabs, an independent laboratory in West Palm Beach, Florida, ran the gel-clot form of the test on July 30, 2026, after dissolving the vial in 3 mL. The page carries the lot number, the test date, the report number and the laboratory’s description of the sample as received.

What the number allows that a pass does not

A pass states that the result fell below the threshold. When a certificate prints the pass without the result, the research entity cannot tell whether the lot measured 2 EU or 39. When it prints the pass without the threshold, the research entity cannot tell whether the limit was 40 or 400. In either case the pass cannot be checked, and a result that cannot be checked is a claim rather than data.

With the number printed, a research entity can confirm the pass, compare the lot with other lots, and apply its own limit, which may be stricter than the laboratory’s. A research entity that holds its own work to 20 EU per vial can see from this page that the lot sits above that limit, which a pass alone would not have shown it.

A school exam shows the same thing

A student is told the exam was passed, and nothing more. The passing mark was 65. The student could have scored 66 or 98, and those are very different results. A student applying to a program that requires 75 needs the actual score, because “pass” does not show whether it clears 75.

The GHK-Cu certificate prints the score and the passing mark: 29.3 EU per vial against a threshold of 40. A research entity that holds its work to 20 EU per vial can see from that number that this lot is above its own limit. “Pass” alone would never show that.

What the annotated page is for

The annotated GHK-Cu page marks where the result, the threshold, the sensitivity and the determination sit on the certificate. A research entity can use it to find the same four figures on any endotoxin certificate it receives, and to ask for them where they are missing. Those figures matter because endotoxin can trigger responses of its own in an experiment. Knowing the amount in the vial is what lets a research entity attribute its results to GHK-Cu rather than to contamination.

“Read the result, then the threshold, then the sensitivity,” Crescent Bioresearch said. “The pass should follow from those three. If a certificate does not show them, there is nothing to check the pass against.”

SOURCE DOCUMENTS

Bacterial Endotoxins Test report IF-824-QSA-TR006-BTL261029-10, issued by BTLabs, West Palm Beach, Florida, for GHK-Cu lot CBR-GHK-260403-001, tested July 30, 2026, by gel-clot LAL; USP General Chapter 85, Bacterial Endotoxins Test.

ABOUT CRESCENT BIORESEARCH

Crescent Bioresearch is a supplier of laboratory compounds, founded around a framework of critical assessment. It works with research entities nationwide in pursuit of preserving the integrity of scientific research through its transparency approach. Follow the Crescent Discovery Series to dive into the latest breakthroughs and findings within prominent literature.

Find Crescent Bioresearch on Instagram, TikTok, X and Facebook, and every certificate we publish, at crescentbioresearch.com/links.

Media Contact:
Name: Media Relations
Company: Crescent Bioresearch
Email: media@crescentbioresearch.com
Website: https://crescentbioresearch.com/links