Tirzepatide Purity: 7658 Lab Tests Across 1541 Vendors

675 studies (9 from unattributed sources) on Tirzepatide curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.

We tested 7658 Tirzepatide batches across 1541 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 →

99.69%
Avg purity
7658
Batches tested
1541
Manufacturers
10
Failed <90% purity
374
Underdosed >10%
ManufacturerBatchesAvg purity
Bfflist Amo 247 99.61% View COA →
Sry Labs 207 99.55% View COA →
Shanghai Sigma Audley Ssa 140 99.56% View COA →
Hk Peptides 133 99.76% View COA →
Allen Biotechnology Co Abc 124 99.66% View COA →
Planet Peptide 105 99.76% View COA →
Zlz Peptide 94 99.72% View COA →
GYC 93 99.73% View COA →

Recent certificates: #27962 (99.94%) · #28001 (99.52%) · #30760 (99.98%) · #31566 (99.96%) · #42192 (99.69%) · #42719 (99.95%)

Vendors who tested Tirzepatide

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

AMO 247 COAs · 99.6% avg SRY 207 COAs · 99.6% avg SSA 140 COAs · 99.6% avg Hk Peptides 133 COAs · 99.8% avg ABC 124 COAs · 99.7% avg Planet Peptide 105 COAs · 99.8% avg ZLZ 94 COAs · 99.7% avg GYC 93 COAs · 99.7% avg QSC 73 COAs · 99.6% avg Nexaph 68 COAs · 99.6% avg Oupeptide 65 COAs · 99.6% avg Simple Peptide 61 COAs · 99.9% avg

Research tools

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

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