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MZ Biolabs-tested peptides

Certificates of analysis from MZ Biolabs that peptide vendors publish: which vendors use the lab, which peptides it tested, and what it found. MZ Biolabs's website.

MZ Biolabs website
48published reports
4vendors
22peptides
99.62%median purity
110%median measured vs label

Accreditation

No accreditation found

We found no ISO/IEC 17025 accreditation for this lab in the accreditation bodies' registries.

Registries searched: A2LA, PJLA, ANAB (couldn't be searched) · checked 2026-10-10. ISO/IEC 17025 is the standard for testing-lab competence; we check the accreditation body's own registry, not the lab's claim.

Vendors that publish MZ Biolabs reports

Peptides tested by MZ Biolabs

Latest MZ Biolabs reports

VendorPeptideDatePurityMeasured vs label
PurePeptidesRetatrutide2026-05-22––View (image)
Nexa LabsSemax2025-11-25––View (image)
Nexa LabsCJC-1295 (no DAC) + Ipamorelin2025-11-25––View (image)
Nexa LabsGLOW2025-11-25––View (image)
Nexa LabsBPC-157 + TB-5002025-11-25––View (image)
Amino AmigosGLOW2025-11-1899.94%–View
Amino AmigosCJC-1295 (no DAC) + Ipamorelin2025-08-0799.77%–View
Amino AmigosTesamorelin2025-08-0799.41%108%View
Amino AmigosMelanotan II2025-08-0798.75%71%View
Amino AmigosAOD-96042025-08-0797.02%32%View
Amino AmigosKPV2025-07-0999.97%94%View
Amino AmigosSnap-82025-07-0897.69%–View
Amino AmigosRetatrutide2025-03-1099.9%116%View
Amino AmigosEpithalon2025-01-2898.08%–View
Amino AmigosPT-1412025-01-2799.44%–View
Amino AmigosTirzepatide2025-01-2799.83%136%View
Amino AmigosCagrilintide + Semaglutide + Tirzepatide2025-01-0398.47%–View
Amino AmigosTirzepatide2024-08-0499.75%124%View
Amino AmigosTirzepatide2024-07-2399.96%138%View
Amino AmigosSemaglutide2024-07-1099.9%127%View
Amino AmigosSemaglutide2024-07-1099.87%153%View
Amino AmigosTirzepatide2024-07-1098.09%118%View
Amino AmigosTirzepatide2024-05-1799.62%110%View
Amino AmigosTirzepatide2024-05-1799.76%117%View
Amino AmigosCagrilintide + Semaglutide + Tirzepatide2024-04-1799.9%–View
Amino AmigosCagrilintide2024-04-1799.5%–View
Amino AmigosCagrilintide + Semaglutide2024-04-1799.75%–View
Amino AmigosCagrilintide + Tirzepatide2024-04-1799.96%–View
Amino AmigosTirzepatide2024-04-0799.67%–View
Amino AmigosTirzepatide2024-03-2099.78%119%View
Amino AmigosTirzepatide2024-03-2099.73%74%View
Amino AmigosTirzepatide2024-03-2099.8%98%View
Amino AmigosSemaglutide2024-03-2099.73%103%View
Amino AmigosSemaglutide2024-02-1299.65%106%View
Amino AmigosTirzepatide2024-02-1199.56%107%View
Amino AmigosSemaglutide2024-01-1699.9%93%View
Amino AmigosTirzepatide2024-01-1399.9%125%View
Longevity PlanCJC-1295 (no DAC) + Ipamorelin–99.4%–View
Longevity PlanEpithalon–99.5%–View
Longevity PlanThymosin Alpha-1–99.3%–View
Longevity PlanSemax–99.6%–View
Longevity PlanSelank–99.4%–View
Longevity PlanGLOW–99.2%–View
Longevity PlanKLOW–99.2%–View
Longevity PlanTirzepatide–99.5%–View
Longevity PlanRetatrutide–99.6%–View
Longevity PlanTesamorelin–99.4%–View
Longevity PlanMOTS-c–99.3%–View

Reports as published by vendors; numbers are shown where the document is readable text. A vendor's COA shows one tested sample, not every batch. Vendors banned for fake lab reports are excluded.