Certificates of Analysis
Independent lab reports for every batch of Retatrutide research peptide we supply in the UK.
Why We Publish Our COAs
A Certificate of Analysis (COA) is an independent laboratory document confirming the identity, purity, and quantity of a compound. Every batch of Retatrutide supplied by My Reta is sent to Janoshik Analytical, an independent third-party laboratory, for HPLC and mass-spectrometry testing before it is offered for sale.
We publish our results so researchers can verify exactly what they are working with. If a batch does not meet our 99%+ purity standard, it is not sold.
Current Batch Report
Janoshik Analytical
Retatrutide — 99.278% purity (HPLC)
Need the COA for a specific batch number? Email info@myreta.co.uk with your batch number and we will send the full certificate, or call our free 24-hour line on 0330 043 3184.
How to Verify a Janoshik Certificate
- Every Janoshik report carries a unique task number and QR code.
- Enter the task number on Janoshik's official verification page to confirm the report is genuine and unaltered.
- Check that the compound name, batch number, and tested quantity match the vial you received.
Learn more about our testing standards on the Quality Testing page, or browse our lab-tested Retatrutide UK range.
All products are supplied strictly for research and laboratory purposes only.