FOR RESEARCH USE ONLY. NOT FOR HUMAN CONSUMPTION.
How we picked these companies
Every company here sells peptides for laboratory research and runs an active online store. We read each company’s own website on October 9, 2026, captured its homepage the same day and checked the FDA warning-letter index. We did not buy or test any products.
Licensed Peptides is listed first because this site is published on its behalf by a marketing affiliate. Biased? Completely. We still think its quality is the best here, which is why we point you to its batch reports instead of asking you to trust us. The order of the other nine is not a quality ranking. See our comparison methodology and editorial policy.
At a glance
| Company | Public lab documents | Accreditation number shown | FDA warning letter |
|---|---|---|---|
| 1. Licensed Peptides | Purity + endotoxin libraries | Yes (A2LA 6377.01) | None found |
| 2. Umbrella Labs | Dated COA archive | Yes (A2LA 6377.01.01) | 2021 |
| 3. Limitless Life Nootropics | Purity, endotoxin, sterility per batch | Not shown | None found |
| 4. Swiss Chems | Test results page | Not shown | 2024 |
| 5. Core Peptides | Lot COA per product | Yes (A2LA 6377.01.01) | None found |
| 6. Sports Technology Labs | Latest COA per product | Not shown | None found |
| 7. Prime Peptides | Per-lot COAs | Not shown | 2024 |
| 8. Biotech Peptides | Lot COA per product | Not shown | None found |
| 9. Certified Peptides | COA + contaminant reports | Stated, no number | None found |
| 10. Peptide Partners | Searchable certificate database | Not shown | 2026 |
From each company’s own pages and the FDA warning-letter index, checked October 9, 2026. “Accreditation number shown” means a certificate number was printed on a document we read. Homepage images were captured the same day and may have changed since.
Full disclosure: we are biased, since this site is published on behalf of Licensed Peptides. But we do think its quality is the best on this list, and unlike a lot of claims, you can check it: every batch report is public.
- Lab documents
- Public purity report library covering 86 products and 133 reports, plus a separate endotoxin report library. File names carry batch codes.
- Testing laboratories
- Vanguard Laboratory (A2LA Certificate 6377.01) and Ethos Analytics, both described by the company as ISO/IEC 17025-accredited.
- Tests listed
- A six-point check per batch: HPLC purity, mass-spectrometry identity, content, endotoxin (LAL), sterility and heavy metals, as listed by the company.
- Purity stated
- 99%+ HPLC purity, as stated by the company, with the report for each batch published online.
- Shipping
- Free FedEx 2-Day on orders of $200 or more; the company states same-day dispatch before its daily cutoff.
- Support
- Phone and text at +1 (855) 322-2214, Monday to Friday, and email.
- Sample list price
- BPC-157, 5 mg vial: $53.99. Code PSTACK5 gives a further 5% off.
- FDA warning letter
- None found in the FDA warning-letter index.
Disclosure: this site is published on behalf of Licensed Peptides by a marketing affiliate, which is why it is listed first. Want proof of the quality part? Open the reports.
PSTACK5 at checkout2. Umbrella Labs
Website: umbrellalabs.is
A dated COA archive with lot numbers and an endotoxin report.
- Lab documents
- A public COA archive by category and date, with lot numbers (for example BPC-157 5 mg, lot ULP-20409A, June 15, 2026).
- Testing laboratory
- Vanguard Laboratory on 2026 COAs (A2LA Certificate 6377.01.01 referenced); MZ Biolabs on older COAs.
- Tests shown
- HPLC purity and quantity; endotoxin by LAL on a bulk lot. No mass-spectrometry identity, sterility or heavy-metal result was seen.
- Shipping
- Free shipping within the United States, sent within 24 to 48 hours; no international shipping.
- Orders and returns
- The terms state all sales are final.
- Support
- Phone line and contact form, Monday to Friday 9am to 5pm PT.
- Sample list price
- BPC-157 vial: from $48.99.
- FDA warning letter
- Letter 612037, May 18, 2021.
The FDA letter is from 2021; we did not check whether the issues it raised have been closed.
3. Limitless Life Nootropics (Limitless Biotech)
Website: limitlesslifenootropics.com
Separate purity, endotoxin and sterility COAs for each batch, though prices are no longer public.
- Lab documents
- COAs linked from product pages, one set per batch, each with separate purity, endotoxin and sterility reports.
- Testing laboratory
- TrustPointe Analytics, Dorr, MI, with an online verification key. No accreditation number was shown on the COAs we viewed.
- Tests shown on the COA
- Assay, identity and purity; USP <85> bacterial endotoxin; USP <71> sterility.
- Shipping
- Standard $14, expedited $25 and overnight $75 options; no free-shipping threshold found.
- Orders and returns
- Missing or damaged items must be reported within 10 days of delivery.
- Support
- Email, contact form and phone, Monday to Friday 6am to 4pm CST.
- Sample list price
- Not public. Pricing requires an account or a research-access application.
The site now uses the name Limitless Biotech and has a 21+ age gate.
4. Swiss Chems
Website: swisschems.is
A large independent test results page, with reports that confirm identity by LC-MS.
- Lab documents
- An independent test results page with 94 reports on October 9, 2026, the newest dated September 24, 2026.
- Testing laboratories
- Third-party laboratories described by the company as ISO-accredited; the lab is named on each report. No accreditation number appeared on the report we read.
- Tests shown
- LC-MS identity and net content on the sample BPC-157 report; no purity percentage, endotoxin or sterility result on that report.
- Shipping
- Free over $100 in the US and over $300 internationally; same-day dispatch for US orders before 12pm EST.
- Orders and returns
- Peptides cannot be returned.
- Support
- Email and phone, Monday to Friday 9am to 5pm EST, plus a contact form.
- Sample list price
- BPC-157 (arginine salt), 5 mg vial: $39.99.
- FDA warning letter
- Letter 695663, December 10, 2024.
The report we sampled confirmed identity and content but did not state a purity percentage.
5. Core Peptides
Website: corepeptides.com
Lot-numbered COAs on each product page from an A2LA-accredited laboratory.
- Lab documents
- A COA PDF on each product page, one per lot (for example BPC-157 5 mg, lot C74112).
- Testing laboratory
- Vanguard Laboratory, Olympia, WA; the COA references A2LA Certificate 6377.01.01.
- Tests shown on the COA
- HPLC-UV/VIS identity and chromatographic purity. Endotoxin, sterility and heavy-metal results were not on the COA we reviewed.
- Shipping
- Free USPS Priority on US orders over $200; same-business-day dispatch for orders before 1pm PST.
- Orders and returns
- The shipping page describes refund requests within 30 days, while the terms state all sales are final.
- Support
- Email, contact form and phone, Monday to Friday 9am to 5pm ET.
- Sample list price
- BPC-157, 5 mg: $52.00.
Its COAs show purity and identity by HPLC only; other test types were not on the documents we read.
6. Sports Technology Labs
Website: sportstechnologylabs.com
Posts the most recent COA for each product, with HPLC-UV-MS testing by MZ Biolabs.
- Lab documents
- A COA page and the latest COA on each product page. Only the most recent certificate per product is shown.
- Testing laboratory
- MZ Biolabs, Tucson, AZ. No ISO 17025 or A2LA number appeared on the COA we reviewed.
- Tests shown on the COA
- HPLC-UV purity with a stated HPLC-UV-MS method. Endotoxin, sterility and heavy metals were not found.
- Shipping
- Free shipping on US orders over $149; usually ships within one business day. Ships to the US, Canada and UK.
- Orders and returns
- Unused items can be exchanged within 60 days.
- Support
- Email, phone and contact form; weekday and Saturday morning hours.
- Sample list price
- BPC-157, 5 mg: $54.99.
The BPC-157 COA shown on the product page is titled 10 mg while the product is listed as 5 mg.
7. Prime Peptides
Website: primepeptides.co
Detailed per-lot COAs with LC-MS identity, endotoxin and microbial checks.
- Lab documents
- A testing page plus COAs on each product page; batch numbers and Janoshik verification keys are listed on the homepage.
- Testing laboratories
- Janoshik and a second named laboratory. No accreditation number appeared on the COA we reviewed.
- Tests shown on the COA
- LC-MS identity, HPLC-UV purity, net content, endotoxin and microbial analysis by PCR.
- Shipping
- $9.95 FedEx 2-Day, or free UPS 2-Day on orders over $150; US only.
- Orders and returns
- Return requests within 30 days of receipt, with prior authorization.
- Support
- Contact form, website chat and phone, Monday to Friday.
- Sample list price
- BPC-157, 10 mg: $55.00.
- FDA warning letter
- Letter 695156, December 10, 2024, to Prime Vitality, Inc. dba Prime Peptides.
The address differs between its contact and return-policy pages.
8. Biotech Peptides
Website: biotechpeptides.com
Lot-numbered COAs with both HPLC purity and mass-spectrometry identity.
- Lab documents
- COA images and a PDF on each product page, one per lot (for example BPC-157 5 mg, lot 3140013, dated July 21, 2026).
- Testing laboratory
- MZ Biolabs. No ISO 17025 or A2LA number was shown on the COA.
- Tests shown on the COA
- HPLC-UV purity and mass-spectrometry identity. Endotoxin, sterility and heavy-metal results were not on the COA.
- Shipping
- Free USPS Priority on orders over $200; same-day dispatch for orders by 1pm PST.
- Orders and returns
- The company states it does not accept returns.
- Support
- Email, phone and text, and a contact form.
- Sample list price
- BPC-157, 5 mg: $52.00, with 5% off 5 to 9 units and 10% off 10 or more.
Its COAs name the analyst but do not show an accreditation number.
9. Certified Peptides (Certified-PEP)
Website: certified-pep.com
A public COA library with a separate contaminant report for most products, tested by Vanguard Laboratory.
- Lab documents
- Public COA library with a COA and a contaminant report for most products. File names carry test dates; lot numbers were not shown in the listing.
- Testing laboratory
- Vanguard Laboratory, described by the company as ISO/IEC 17025:2017-accredited. No certificate number was shown.
- Tests listed
- Purity, content, endotoxin, heavy metals and sterility, as listed by the company.
- Shipping
- Ships to US addresses only, usually the next business day, by FedEx 2 Day or USPS Priority.
- Orders and returns
- The FAQ states all sales are final.
- Support
- Live chat and email; no phone number found.
- Sample list price
- BPC-157, 10 mg: $60.00.
Most of the store sits behind an account sign-in, as its homepage shows.
10. Peptide Partners
Website: peptide.partners
A searchable certificate database across three laboratories.
- Lab documents
- A searchable Independent Certifications page with 424 records on October 8, 2026, filterable by batch ID, laboratory and date.
- Testing laboratories
- Chromate, TrustPointe and Kovera. No accreditation number was found on the records sampled.
- Tests listed
- Purity, endotoxin, heavy-metal and sterility records.
- Shipping
- Free shipping on orders over $400.
- Orders and returns
- Full refund only before shipment; damaged goods must be reported within 48 hours.
- Support
- Phone, text and email, Monday to Friday 10am to 5pm ET.
- Sample list price
- Multi-vial packs; Ipamorelin 20 mg pack: $82.00 (checked October 8, 2026).
- FDA warning letter
- Letter 735063, August 24, 2026, to Peptide Partners LLC.
We compare it with Licensed Peptides in detail in our Licensed Peptides vs Peptide Partners review.
What lab documents show, and what they do not
A certificate of analysis (COA) reports results for the sample the laboratory received. It does not show that every unit in a batch is identical, and a lab cannot confirm that a submitted sample represents a whole lot unless it collected the sample itself.
When comparing suppliers, it helps to check three things: that the lot number on the vial matches the document, which tests were actually run (purity, identity, endotoxin, sterility, heavy metals), and whether the laboratory lists an accreditation that covers those methods. Third-party documents do not replace a laboratory’s own incoming checks.
Published on behalf of Licensed Peptides, one of the companies listed, by a Licensed Peptides marketing affiliate. Based only on public web pages checked on October 9, 2026. FDA warning letters are listed as public records; we did not check whether the issues they raised were later resolved. No products were purchased or tested.
Corrections
If any company, or any reader, believes something on this page is inaccurate or out of date, please tell us through our contact page with a link to the current source. We review requests and update the page and its checked date.
Sources
- Licensed Peptides, purity reports: licensedpeptides.com/purity-reports/
- Licensed Peptides, endotoxin reports: licensedpeptides.com/endotoxin-reports/
- Umbrella Labs, COA archive: umbrellalabs.is/certificate-of-analysis-coa/
- Limitless Life Nootropics, BPC-157 product page and FAQ: limitlesslifenootropics.com/product/bpc-157/
- Swiss Chems, independent test results: swisschems.is/independent-test-results/
- Core Peptides, BPC-157 product page and COA: www.corepeptides.com/peptides/bpc-157/
- Sports Technology Labs, COA page and FAQ: sportstechnologylabs.com/coas/
- Prime Peptides, testing page: primepeptides.co/testing/
- Biotech Peptides, BPC-157 product page and COA: biotechpeptides.com/product/bpc-157/
- Certified-PEP, COA library and FAQ: certified-pep.com/coas/
- Peptide Partners, Independent Certifications: peptide.partners/independent-certifications
- FDA warning letter 612037 (Umbrella), May 18, 2021
- FDA warning letter 695663 (Swisschems), December 10, 2024
- FDA warning letter 695156 (Prime Peptides), December 10, 2024
- FDA warning letter 735063 (Peptide Partners LLC), August 24, 2026
FOR RESEARCH USE ONLY. NOT FOR HUMAN CONSUMPTION.
These products are intended exclusively for laboratory research purposes and are not intended to diagnose, treat, cure, mitigate, or prevent any disease or medical condition.
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FOR RESEARCH USE ONLY. NOT FOR HUMAN CONSUMPTION.
