MZ Biolabs
Tucson, Arizona laboratory (analytical chemist and owner Ken Pendarvis) cited by several vendors, with certificates in our records going back to July 2021. The "proof of authenticity" QR code on each certificate opens the laboratory's own record on mzbiolabs.com, and on 2026-10-22 an invented certificate ID returned "No certificate ... was found". Reports cover HPLC purity with mass spectrometry identity. No ISO/IEC 17025 accreditation is published. Methods: HPLC, mass spectrometry, microbial.
- Vendors with its COAs
- 11
Vendors with its COAs
- Peptides tested
- 12
Peptides tested
Tier A
Tucson, AZ
Checks run
- BusinessL1 Real business: Pass
- IndependentL2 Independence: Pass
- Verify routeL3 Verification route: Pass
- MethodL4 Identity method: Pass
- Track recordL5 Track record: Pass
- AccreditedL6 Accreditation: Fail
Six published checks, the same for every laboratory. Results and evidence
Verify an MZ Biolabs certificate yourself
Where the code is, the lookup address, what a genuine result shows, and the control check. We confirmed 55 of 80 certificates naming MZ Biolabs at the laboratory, from 5 vendors.
About MZ Biolabs
MZ Biolabs is an independent analytical lab based in Tucson, AZ, rated tier A in the Peptide Source Review lab directory. No ISO/IEC 17025 accreditation is published by the laboratory (checked 2026-10-21). Certificates from a tier A laboratory earn the +2 laboratory points in our lab rubric.
11 US peptide vendors in our audit publish certificates naming MZ Biolabs, led by Ascension Peptides at 7.55/10. The reports cover HPLC, mass spectrometry, microbial.
How we graded MZ Biolabs
Each check is the same for every laboratory (the rules). Checked 2026-10-22.
| Result | Check | What we found |
|---|---|---|
| Pass | L1 Real business | Street address 2102 N Country Club Rd, Suite C, Tucson, AZ, with named staff Ken Pendarvis (Analytical Chemist, Owner) and Jaishree Mali, PhD (Analytical Chemist).Evidence for L1 (opens in new tab)mzbiolabs.comchecked |
| Pass | L2 Independence | mzbiolabs.com was registered 2019-09-25, before its earliest report (2021-07-01); 11 unrelated vendor clients; lookup on the lab's own domain; no link to a listed vendor found.Evidence for L2 (opens in new tab)peptidepros.netchecked |
| Pass | L3 Verification route | On 2026-10-22 the certificate viewer returned lot 3140013 for a real ID and 'No certificate ... was found' for an invented one.Evidence for L3 (opens in new tab)mzbiolabs.comchecked |
| Pass | L4 Identity method | Current certificates give the method as HPLC-UV-MS; the 2021 report gives 'Mass Spectrometry and UV' with an MS trace.Evidence for L4 (opens in new tab)biotechpeptides.comchecked |
| Pass | L5 Track record | Earliest report 2021-07-01, over five years before the check; 11 clients.Evidence for L5 (opens in new tab)peptidepros.netchecked |
| Fail | L6 Accreditation | No ISO/IEC 17025 accreditation is claimed (a DEA registration only), and the A2LA, PJLA and ANAB registers have no entry for it.Evidence for L6 (opens in new tab)customer.a2la.orgchecked |
No ISO/IEC 17025 accreditation is published by the laboratory (checked 2026-10-21)
Vendors publishing MZ Biolabs certificates
Peptides tested here
Products whose certificate on a vendor page names MZ Biolabs. Compare sources for each.
Similar labs
Other tier A labs in our directory.
MZ Biolabs: Frequently Asked Questions
Is MZ Biolabs accredited?
We have not confirmed ISO/IEC 17025 accreditation for MZ Biolabs that is active on the accrediting body's register with a scope covering peptide testing (check L6). No ISO/IEC 17025 accreditation is published by the laboratory (checked 2026-10-21).
Which peptide vendors use MZ Biolabs?
11 vendors in our independent audit publish certificates naming MZ Biolabs: Ascension Peptides, Limitless Biotech, Sports Technology Labs, Profound Aminos, NuScience Peptides, Biotech Peptides, and 5 more. The full list with scores is on this page.
What does MZ Biolabs test for?
MZ Biolabs performs HPLC, mass spectrometry, microbial on research-peptide samples.