Retatrutide 99.8% Purity — Zen PeptidesCertificate of Analysis · Independent third-party lab result
LabE tested this Retatrutide batch at 99.78% purity using HPLC, mass quantification, and endotoxin testing. The tested quantity of 25mg was significantly below the 30mg label, a deviation of -16.7%. Endotoxins were reported as low. This test is recent (under 3 months) and customers can cross-check on the lab's public verification URL.
- quantity deviation (-16.7%)
- no batch ID
- Test date
- 2026-03-03
- Testing lab
- LabE
- Batch / lot
- (no batch ID)
- Quantity
- 25mg
- Endotoxins
- low
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 5.1
- Label dose
- 30mg
How this result compares
This Retatrutide certificate's tested purity of 99.78% ranks higher than 39% of the 9821 Retatrutide certificates with a purity result we have catalogued (median 99.83%).
Tested 2026-03-03 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 57% of our catalogued Retatrutide certificates.
Zen Peptides has 32 certificates in our corpus, including 11 for Retatrutide at a median tested purity of 99.66%.
Test report image
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