Our Certificates of Analysis
Last updated: 11/10/2026
Every batch we sell is tested by an independent laboratory and the certificate is published here in full. You do not need an account, an email address or a request form to read one. Each entry carries the batch number printed on the vial label, so you can match a certificate to the exact material you received.
Our Testing Laboratory
Testing is carried out by Vanguard Laboratory, an independent analytical laboratory at 2635 Parkmont Ln, Olympia, WA 98502. Vanguard is independent of Core Peptides: we are a paying client and nothing more, with no ownership or commercial interest either way.
Vanguard states accreditation to ISO/IEC 17025:2017, and each report carries the line “Please consult A2LA Certificate #6377.01.01 for a list of accredited tests.” Every report is issued by the laboratory’s Laboratory Director and countersigned by its Operations Manager, both named on the certificate.
What Every Certificate Shows
Every batch is tested by the same laboratory, by the same method, and the result is printed on a report we publish whole. Purity is measured by HPLC-UV/VIS chromatography and reported to two decimal places.
| What you get | On every certificate |
| Independent laboratory | Tested by Vanguard Laboratory, an outside lab accredited to ISO/IEC 17025:2017 — never in-house |
| Named signatories | Issued by the Laboratory Director, countersigned by the Operations Manager |
| Batch-specific | Tied to the lot number printed on your vial, not a generic sample |
| Measured purity | Chromatographic purity by HPLC-UV/VIS, as a percentage |
| Published in full | The complete PDF as the laboratory issued it — no account, no email, no request form |
Browse the Certificates of Analysis
Search by product name or by the batch number on your vial. Every row links to the full PDF exactly as the laboratory issued it.
- 92certificates published
- 83products tested
Every certificate below is published in full, with the batch number printed on the vial. No account, no email address and no request form.
Showing all 92 certificates
No certificate matches that. Check the batch number on the vial label, or email info@corepeptides.com.
Certificate Not Listed?
Publication can lag a new batch going on sale by a short period. If the batch number on your vial is not in the table, email support@corepeptides.com with the lot number and we will send the certificate and add it here.
Frequently Asked Questions
Who tests Core Peptides products?
Vanguard Laboratory, an independent analytical laboratory in Olympia, Washington. It is not owned by or affiliated with Core Peptides. Each report names the Laboratory Director who issued it and the Operations Manager who approved it.
What do your certificates of analysis measure?
Chromatographic purity by HPLC-UV/VIS, reported as a percentage. It tells you what proportion of the material is the compound by that method. It is not a sterility test, an endotoxin test or a mass-spectrometry identity confirmation.
How do I match a certificate to the vial I received?
Use the batch or lot number printed on the vial label and search for it in the table above. The batch number on the certificate and the batch number on the label are the same string.
Why would a batch be missing?
Almost always because the batch is newer than the last update to this page. Email the lot number to support@corepeptides.com and we will send the certificate directly and publish it here.
Can I see a certificate before ordering?
Yes. Every one of our certificates of analysis is public, and every product page carries its own Certificate of Analysis tab. Nothing is held back until after purchase.
ALL PRODUCTS sold on our site are for laboratory RESEARCH OR EDUCATIONAL PURPOSES ONLY. Personal use or human consumption of our products is expressly PROHIBITED. For details, please review and adhere to our Terms and Conditions.