Test Results & Certificates of Analysis

Transparency is at the core of everything we do. We regularly pull batches from our catalog for independent, third-party testing — and publish the results here.

Our Testing Process

Our peptides are verified through independent third-party laboratories:

HPLC (High-Performance Liquid Chromatography) — verifies purity — our tested batches consistently verify at 99%+ purity
Mass Spectrometry — confirms molecular identity and correct sequence
Endotoxin & Sterility Testing — available on request for applicable products

Certificates of Analysis

Below are recent Certificates of Analysis from independent third-party laboratories, including Janoshik Analytical. Each certificate includes purity analysis (HPLC) and quantity verification. Click any certificate to view full size.

Retatrutide 10mg Certificate of Analysis - Janoshik — Retatrutide 10mg — Janoshik Analytical — 99.533% Purity

Retatrutide 20mg Certificate of Analysis - Janoshik — Retatrutide 20mg — Janoshik Analytical — 99.838% Purity

Retatrutide 30mg Certificate of Analysis - Janoshik — Retatrutide 30mg — Janoshik Analytical — 99.828% Purity

BPC-157 10mg Certificate of Analysis - Janoshik — BPC-157 10mg — Janoshik Analytical — 99.795% Purity

TB-500 10mg Certificate of Analysis - Janoshik — TB-500 10mg — Janoshik Analytical — 99.425% Purity

GHK-Cu 100mg Certificate of Analysis - Janoshik — GHK-Cu 100mg — Janoshik Analytical — 99.915% Purity

KLOW Blend 80mg Certificate of Analysis - Janoshik — KLOW Blend 80mg — Janoshik Analytical — 99%+ Purity

MOTS-C 40mg Certificate of Analysis - Janoshik — MOTS-C 40mg — Janoshik Analytical — 99.307% Purity

Cagrilintide 5mg Certificate of Analysis - Janoshik — Cagrilintide 5mg — Janoshik Analytical — 99.406% Purity

Our Guarantee

If any product does not meet our stated purity specifications, we will replace it or issue a full refund. We stand behind every product we sell.