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Janoshik-tested peptides

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

Janoshik website
1845published reports
94vendors
104peptides
99.71%median purity
111%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: ČIA, A2LA, PJLA · 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 Janoshik reports

Peptides tested by Janoshik

Latest Janoshik reports

VendorPeptideDatePurityMeasured vs label
Amplified AminoTirzepatide2026-10-0299.73%114%View
NexaphTirzepatide2026-10-0299.73%114%View
NexaphTirzepatide2026-10-0299.81%117%View
NexaphTesamorelin2026-10-0297.56%109%View
Noble DragonsRetatrutide2026-10-01––View (image)
Amplified AminoRetatrutide2026-09-2299.57%120%View
Amplified AminoNAD+2026-09-22–110%View
NexaphNAD+2026-09-22–110%View
NexaphRetatrutide2026-09-2299.57%120%View
CertaPeptidesAHK-Cu2026-09-1899.12%94%View
CertaPeptidesBPC-1572026-09-1899.944%130%View
CertaPeptidesDSIP2026-09-1899.307%113%View
CertaPeptidesEpithalon2026-09-1899.514%98%View
CertaPeptidesKisspeptin-102026-09-1899.849%109%View
CertaPeptidesKPV2026-09-1898.786%119%View
CertaPeptidesLL-372026-09-1899.379%95%View
CertaPeptidesMelanotan II2026-09-1899.455%104%View
CertaPeptidesPinealon2026-09-1898.094%106%View
CertaPeptidesPT-1412026-09-1899.976%97%View
CertaPeptidesRetatrutide2026-09-1899.639%110%View
CertaPeptidesSelank2026-09-1899.163%122%View
CertaPeptidesSnap-82026-09-1899.931%108%View
CertaPeptidesVIP2026-09-1899.142%98%View
CertaPeptides5-Amino-1MQ2026-09-17–87%View
CertaPeptidesRetatrutide2026-09-1799.268%103%View
CertaPeptidesRetatrutide2026-09-1799.427%96%View
CertaPeptidesRetatrutide2026-09-1799.502%110%View
CertaPeptidesRetatrutide2026-09-1799.422%115%View
Noble DragonsRetatrutide2026-09-15––View (image)
Amplified AminoGLOW2026-09-14––View (image)
NexaphGLOW2026-09-14–33%View
Shenzhen Aurora BiotechnologyRetatrutide2026-09-14––View (image)
My Pure PeptideKisspeptin-102026-09-1099.984%128%View
My Pure PeptidePT-1412026-09-1099.965%106%View
NexaphGHK-Cu2026-09-10–97%View
NexaphTesamorelin2026-09-1097.49%115%View
Peptide Group Buy PGBKPV2026-09-1098.89%119%View
NexaphRetatrutide2026-09-0999.65%123%View
My Pure PeptideTirzepatide2026-09-0799.816%102%View
Peptide Group Buy PGB5-Amino-1MQ2026-09-07––View
Peptide Group Buy PGBThymosin Alpha-12026-09-0799.92%111%View
Peptide Group Buy PGBAdamax2026-09-0799.53%111%View
Peptide Group Buy PGBDSIP2026-09-0799.19%121%View
Peptide Group Buy PGBPE-22-282026-09-0799.82%112%View
Peptide Group Buy PGBSemaglutide2026-09-0799.6%119%View
Peptide Group Buy PGBSS-312026-09-0799.85%107%View
Peptide Group Buy PGBGHK-Cu2026-09-0799.23%104%View
Peptide Group Buy PGBSemax2026-09-0799.46%118%View
Peptide Group Buy PGBMelanotan I2026-09-0799.33%110%View
Peptide Group Buy PGBPT-1412026-09-0799.87%117%View
Longevity ProsDSIP2026-09-03––View (image)
Amplified AminoMOTS-c2026-09-0298.88%103%View
NexaphBPC-1572026-09-0299.67%120%View
NexaphBPC-157 + TB-5002026-09-02–117%View
NexaphMOTS-c2026-09-0298.88%103%View
PX PeptidesRetatrutide2026-0999.694%–View
PX PeptidesBPC-1572026-0999.893%–View
PX PeptidesTB-5002026-0999.984%–View
PX PeptidesNAD+2026-09–102%View
PX PeptidesNAD+2026-09–99%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.