How to verify a PuriLab Analytical 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
- 2
Certificates confirmed
- Vendors confirmed
- 1
Vendors confirmed
A lookup confirms that the laboratory issued a report; it does not establish who the laboratory is. PuriLab Analytical is tier D in our directory because its existence or independence is not established, so its certificates score a flat 2.0 under rule A3 whether or not the lookup confirms them. See the lab profile for the checks.
Four steps
Find the code on the certificate
Each certificate prints a verification code.
Open the laboratory's own lookup
Open purilab.org/verify/<code>, replacing <code> with the code as printed. 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 code returns the report record and a laboratory-hosted 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 code returns 'Certificate not found'. Change one character of a real code and look it up again: a lookup that answers every code proves nothing.
www.purilab.org/results → (opens in new tab)
Our check (L3, pass): On 2026-11-02 purilab.org/verify/BT-C0GA-WHKT returned the record for report BT-2026-011 and the laboratory-hosted PDF, and an invented code returned 'Certificate not found'.
What a confirmation is worth in our scores
Because PuriLab Analytical is tier D, a confirmed key adds nothing: every certificate from it scores a flat 2.0 and none counts toward the testing gate. We have confirmed 2 of 2 certificates naming PuriLab Analytical, from 1 vendor; the vendors are listed on the PuriLab Analytical profile. For what every field on a certificate means, read how to read a peptide COA.
Verifying PuriLab Analytical: Frequently Asked Questions
Can I verify a PuriLab Analytical COA online?
Yes. Each certificate prints a verification code. Open purilab.org/verify/<code>, replacing <code> with the code as printed. A real code returns the report record and a laboratory-hosted PDF.
What should an invented PuriLab Analytical code return?
An invented code returns 'Certificate not found'. We ran this control when we checked the lookup on 2026-11-02.
How many PuriLab Analytical certificates has Peptide Source Review confirmed?
2 of the 2 certificates naming PuriLab Analytical on listed vendors' pages were confirmed against the laboratory's own record, from 1 vendor.
What tier is PuriLab Analytical?
PuriLab Analytical is tier D in our lab directory: its independence is not established, so each of its certificates scores a flat 2.0 even when the lookup confirms it, and none counts toward the testing gate.