Certificate of Analysis
Retatrutide · 10mg
Independent third-party testing performed by MZ Biolabs, covering HPLC purity/identity and endotoxin testing for this production batch.
PEPTRYNCertificate of Analysis
ProductRetatrutide · 10mg
Batch2026-06-12
MethodHPLC-UV-MS
Purity99.62%
EndotoxinNegative
Tested byMZ Biolabs
Verify This Report Yourself
This certificate carries a QR code linking to an independent report hosted directly on MZ Biolabs’ own site, not ours. No need to scan it:
This certificate carries a QR code linking to an independent report hosted directly on MZ Biolabs’ own site, not ours. No need to scan it:
How to read this retatrutide 10 mg certificate
This certificate is for retatrutide 10 mg, lot 2026-06-12, tested by MZ Biolabs with HPLC-UV-MS. It reports 99.62% HPLC purity and a negative endotoxin result. Purity is the main peak’s share of all detected peaks. It is not the amount of peptide in the vial.
- Match the lot. Compare 2026-06-12 with the lot on your vial. The lab analyzed this lot on 2026-06-19.
- Check identity. The lab’s report lists an expected monoisotopic mass of 4,728.47 Da and a measured mass of 4,728.54 Da. A retatrutide report should show a mass near that figure.
- Read the quantity line. The lab’s report lists a measured quantity of 13.65 mg against the 10 mg label (+36.5%). That was the highest of the 21 components in our September 2026 data report. It is one lot from one lab, without a stated assay uncertainty.
- Know where the records sit. The purity, identity and quantity record is on MZ Biolabs’ own site, linked above and by a QR code on the certificate. The endotoxin report is a PDF shown further down this page.
More on retatrutide: retatrutide product page · retatrutide price by vial size · buying guide · retatrutide 30 mg certificate · third-party tested peptides · how to read a COA · COA Library. Sold for laboratory research only, to buyers who are 21 or older.