All Retatrutide Certificate of Analysis results— 9808 COAs
TitrateLab · Certificate of Analysis

Retatrutide 99.2% Purity — GYCCertificate of Analysis · Independent third-party lab result

Tested purity 99.2% High purity · 99.178%; 99.516%.
Dose vs label 16.89 mg; 16.45 mg. · tested 16.89 mg; 16.45 mg.
Evidence Artifact captured
AI summary

Retatrutide batch [PHONE_REDACTED] from G tested 07/02/26 shows excellent purity at 99.178%, with consistent duplicate analysis results (99.516%) confirming high-quality synthesis.

Test date
2026-07-02
Testing lab
G
Batch / lot
[PHONE_REDACTED]
Quantity
16.89 mg; 16.45 mg.
Endotoxins
Assay method
Context

How this result compares

This Retatrutide certificate's tested purity of 99.18% ranks higher than 6% of the 9803 Retatrutide certificates with a purity result we have catalogued (median 99.83%).

Tested 2026-07-02 by G. This test is newer than 99% of our catalogued Retatrutide certificates.

GYC has 281 certificates in our corpus, including 76 for Retatrutide at a median tested purity of 99.73%.

Manufacturer
GYC
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Peptides on this report
Retatrutide
Certificate

Test report image

Certificate scan
Certificate scan as published.
Source

Community submission

Artifact captured

Submitted by distilled-oryx-12 +459

We have the certificate image — you can verify it loads from the upstream lab and matches the artifact shown here.

Catalogued
2026-07-19
OCR text Raw extracted text

Extracted via OCR. Names, emails, phone numbers, and street addresses are auto-redacted before display.

TEST REPORT
JANOSHIK
E-mail: [EMAIL_REDACTED]
Web: www.janoshik.com
Task Number #196910
Testing ordered > 17 JUN '26
Sample received > 23 JUN '26
Client G
Sample RT-15 (Black cap)
[NAME_REDACTED] [PHONE_REDACTED]
Sample description >
See picture or pictures attached.
Tests requested >
[NAME_REDACTED] peptide blind test (RT-15)
Results >
Retatrutide 16.89 mg; 16.45 mg.
Purity 99.178%; 99.516%.
Comments >
Analysis conducted > 02 JUL 2026
Signature >
Verify this test at www.janoshik.com/verify/ with the following unique key
HWBCGCGLSH23
Related

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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 →