For research use only. Not for human consumption. Not medical advice — consult a licensed clinician.

Independent test result

Retatrutide

by Peptide Partners· batch SPL-2238

99.33 %

measured purity· November 10, 2025

New to reading a COA? See how to read a peptide COA →

How this batch compares

This batch measured 99.33%, 0.22 pts below Peptide Partners's average of 99.55% for this peptide over 28 batches, and 0.36 pts below the all-vendor average of 99.69% across 406 COAs from 53 vendors.

97.9% 100.0%
This batch 99.33% Vendor avg (28 batches) 99.55% Peptide avg (406 COAs) 99.69%
Compare pricing

See Retatrutide pricing across 53 verified vendors

Merit's price comparison page pulls current listings so you can cross-check purity history vendor by vendor before you buy.

Where to buy

Product pages for this peptide at Peptide Partners