Verified batch reports
Reta COA Library
Independent Janoshik Certificates of Analysis for reta — the short search term for retatrutide (LY-3437943). Open any COA to review the batch identity, lab task details, and verification route.
Independent Janoshik Analytical Certificates of Analysis for every published Reta (retatrutide) batch distributed by Remy. Each entry lists HPLC purity, batch identity, lab task IDs, and verification keys you can punch into janoshik.com to pull the original report off Janoshik's server. For mechanism and study context, start with the reta peptide guide.
For in-vitro laboratory research only. Not for human or veterinary use.
Published batches
Three Reta batches with full Janoshik documentation. The Remy 20mg pen leads this UAE published purity set at 99.841%; the vial line is the only batch on this site with a full sterility-grade panel (heavy metals, TFA and endotoxin).
How to verify a Janoshik COA
Every Janoshik report includes a task number and a verification key. Paste the key into janoshik.com and the portal returns the original PDF off Janoshik's server, independent of Remy. If a vendor publishes a Janoshik image but no key, the image is not verifiable.
What HPLC purity actually measures
HPLC purity is the share of measured peptide that is the named compound (here, reta / LY-3437943, CAS 2381089-83-2). The remainder is peptide-related — usually truncated sequences or synthesis byproducts. HPLC does not see water, salts, or residual solvents. Those need separate panels (assay, heavy metals, TFA, endotoxin), which only the vial-line batch publishes in full on this site.
Need the plain-English answer first? Read what reta peptide is and how reta works, then come back here for batch-level evidence.
Continue through the evidence trail
The COAs on this page document peptide batches for in-vitro research. Use this evidence layer first, then continue to mechanism and study-context pages when you need the research background.