Tirzepatide Purity: 4072 Lab Tests Across 424 Vendors

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

We tested 4072 Tirzepatide batches across 424 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 →

99.62%
Avg purity
4072
Batches tested
424
Manufacturers
9
Failed <90% purity
312
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 130 99.76% View COA →
Allen Biotechnology Co Abc 124 99.66% View COA →
GYC 93 99.73% View COA →
Zlz Peptide 93 99.72% View COA →
Qingdao Sigma Chemical 73 99.63% View COA →

Recent certificates: #16760 (99.707%) · #16762 (99.853%) · #23587 (99.689%) · #22208 (99.9%) · #22209 (99.9%) · #22296 (99.9%)

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 130 COAs · 99.8% avg ABC 124 COAs · 99.7% avg GYC 93 COAs · 99.7% avg ZLZ 93 COAs · 99.7% avg QSC 73 COAs · 99.6% avg Nexaph 68 COAs · 99.6% avg Oupeptide 65 COAs · 99.6% avg Peptide Sciences 56 COAs · 99.7% avg TFC 54 COAs · 99.7% 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