All Retatrutide Certificate of Analysis results— 9827 COAs
TitrateLab · Certificate of Analysis

Retatrutide 99.6% Purity — GYCCertificate of Analysis · Independent third-party lab result

Tested purity 99.6% High purity
Dose vs label +4.2% Essentially at label
Evidence Artifact captured Trust: medium
AI summary Third-party lab

Janoshik tested this retatrutide batch (2025121210) at 99.579% purity via HPLC. The tested quantity was 10.42 mg, a 4.2% deviation from the 10 mg label. Endotoxin status is unknown. The test is recent (3-6 months old), and customers can cross-check on the lab's public verification URL.

Watch out for
  • no endotoxin test
Test date
2025-12-19
Testing lab
Janoshik
Batch / lot
[PHONE_REDACTED]
Quantity
10.42 mg
label 10 mg · tested 10.42 mg
Endotoxins
Assay method
HPLC
Context

How this result compares

This Retatrutide certificate's tested purity of 99.58% ranks higher than 18% of the 9822 Retatrutide certificates with a purity result we have catalogued (median 99.83%).

Tested 2025-12-19 by Janoshik via HPLC. This test is newer than 34% of our catalogued Retatrutide certificates.

GYC has 282 certificates in our corpus, including 77 for Retatrutide at a median tested purity of 99.72%.

Manufacturer
GYC
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Certificate

Test report image

Certificate scan
Certificate scan as published.
Source

Janoshik (public)

Artifact captured

We have the certificate image (SHA-256 hash captured) — you can verify it loads from the upstream lab and matches the artifact shown here.

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Method
HPLC
Test type
purity+quantity
Catalogued
2026-04-22
Artifact hash
892b661810c20412…
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This certificate is part of TitrateLab's community-trust corpus. See more from GYC or learn how trust scores are computed on the methodology page. New to lab reports? How to read a COA →