Retatrutide Purity: 10202 Lab Tests Across 2397 Vendors

151 studies (12 from unattributed sources) on Retatrutide curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.

We tested 10202 Retatrutide batches across 2397 manufacturers

Independent certificate-of-analysis evidence from third-party labs — the data behind the studies. Updated as new COAs are verified. Read the full grey-market analysis →

99.65%
Avg purity
10202
Batches tested
2397
Manufacturers
22
Failed <90% purity
488
Underdosed >10%
ManufacturerBatchesAvg purity
Hk Peptides 139 99.77% View COA →
Lilipeptide 135 99.56% View COA →
Shanghai Sigma Audley Ssa 126 99.45% View COA →
Qing Li Peptide 118 99.62% View COA →
Unknown vendor (review) 117 99.79% View COA →
Nexaph 115 99.41% View COA →
Bfflist Amo 105 99.71% View COA →
Peptaris 105 99.29% View COA →

Recent certificates: #26981 (99.69%) · #26982 (99.91%) · #27579 (99.87%) · #30753 (99.94%) · #38586 (99.75%) · #42718 (99.9%)

Vendors who tested Retatrutide

Manufacturers with published third-party certificates of analysis for Retatrutide. Open a vendor to see every batch we've verified.

Hk Peptides 139 COAs · 99.8% avg Lilipeptide 135 COAs · 99.6% avg SSA 126 COAs · 99.5% avg QLP 118 COAs · 99.6% avg Nexaph 115 COAs · 99.4% avg AMO 105 COAs · 99.7% avg Peptaris 105 COAs · 99.3% avg ZLZ 97 COAs · 99.8% avg Peptide Sciences 85 COAs · 99.6% avg Reta Peptide 80 COAs · 99.7% avg Planet Peptide 78 COAs · 99.7% avg GYC 72 COAs · 99.7% avg

Research tools

Free, no account — handy when you're working with Retatrutide.

Reconstitution calculator Bac water, concentration & insulin-unit math Verify a COA Look up a report number against our corpus