How to verify an SR Biolabs COA
Check a certificate with the laboratory that issued it, not with the seller. These are the steps we use ourselves (check L3 in How we rate). Research use only.
- Certificates confirmed
- 7
Certificates confirmed
- Vendors confirmed
- 1
Vendors confirmed
Four steps
Find the code on the certificate
Each certificate carries a QR code and a lot number.
Open the laboratory's own lookup
Scan the QR code, or use the laboratory's COA lookup; both lead to a PDF on srbiolabs.com named for the lot. Type the address yourself rather than following a link from the seller, and make sure the page is on the laboratory's own domain.
Compare the result with the vendor's copy
A real lot returns the laboratory's PDF. The product, lot, client name, test date, purity and quantity should all match; any difference in these is a material difference.
Run the control check
An invented lot number returns 404 (not found). Change one character of a real code and look it up again: a lookup that answers every code proves nothing.
srbiolabs.com/coa-lookup → (opens in new tab)
Our check (L3, pass): On 2026-10-22 the certificate QR target returned the laboratory's PDF, and an invented lot number returned 404.
What a confirmation is worth in our scores
On an SR Biolabs certificate, a printed key earns +1.5 and a key we confirm at the laboratory earns another +1.5 under our lab rule. Only confirmed certificates count toward the testing gate (rule A9). We have confirmed 7 of 7 certificates naming SR Biolabs, from 1 vendor; the vendors are listed on the SR Biolabs profile. For what every field on a certificate means, read how to read a peptide COA.
Verifying SR Biolabs: Frequently Asked Questions
Can I verify an SR Biolabs COA online?
Yes. Each certificate carries a QR code and a lot number. Scan the QR code, or use the laboratory's COA lookup; both lead to a PDF on srbiolabs.com named for the lot. A real lot returns the laboratory's PDF.
What should an invented SR Biolabs code return?
An invented lot number returns 404 (not found). We ran this control when we checked the lookup on 2026-10-22.
How many SR Biolabs certificates has Peptide Source Review confirmed?
7 of the 7 certificates naming SR Biolabs on listed vendors' pages were confirmed against the laboratory's own record, from 1 vendor.
What tier is SR Biolabs?
SR Biolabs is tier A- in our lab directory, graded on six published checks. Check L3 is whether its reports can be confirmed with the laboratory.