How to verify an MDx BioAnalytical Laboratory 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
- 18
Certificates confirmed
- Vendors confirmed
- 2
Vendors confirmed
Four steps
Find the code on the certificate
Each certificate prints a certificate number.
Open the laboratory's own lookup
Search the number in the laboratory's CoA Search. 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 number 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 number returns no match. Change one character of a real code and look it up again: a lookup that answers every code proves nothing.
Note: Some older 2025 certificate numbers are not in the lookup, so a missing 2025 report is not by itself proof of a problem.
mdxbiolabs.com/certificates-of-analysis → (opens in new tab)
Our check (L3, pass): Its CoA Search returned the laboratory's PDF for real certificate numbers and no match for an invented one. Some older 2025 numbers are not in the lookup.
What a confirmation is worth in our scores
On an MDx BioAnalytical Laboratory 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 18 of 36 certificates naming MDx BioAnalytical Laboratory, from 2 vendors; the vendors are listed on the MDx BioAnalytical Laboratory profile. For what every field on a certificate means, read how to read a peptide COA.
Verifying MDx BioAnalytical Laboratory: Frequently Asked Questions
Can I verify an MDx BioAnalytical Laboratory COA online?
Yes. Each certificate prints a certificate number. Search the number in the laboratory's CoA Search. A real number returns the laboratory's PDF.
What should an invented MDx BioAnalytical Laboratory code return?
An invented number returns no match. We ran this control when we checked the lookup on 2026-10-22.
How many MDx BioAnalytical Laboratory certificates has Peptide Source Review confirmed?
18 of the 36 certificates naming MDx BioAnalytical Laboratory on listed vendors' pages were confirmed against the laboratory's own record, from 2 vendors.
What tier is MDx BioAnalytical Laboratory?
MDx BioAnalytical Laboratory is tier A+ in our lab directory, graded on six published checks. Check L3 is whether its reports can be confirmed with the laboratory.