Tirzepatide Purity: 4025 Lab Tests Across 423 Vendors

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

We tested 4025 Tirzepatide batches across 423 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
4025
Batches tested
423
Manufacturers
9
Failed <90% purity
266
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 127 99.76% View COA →
Allen Biotechnology Co Abc 124 99.66% View COA →
GYC 93 99.73% View COA →
Zlz Peptide 92 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 127 COAs · 99.8% avg ABC 124 COAs · 99.7% avg GYC 93 COAs · 99.7% avg ZLZ 92 COAs · 99.7% avg QSC 73 COAs · 99.6% avg Nexaph 68 COAs · 99.6% avg Oupeptide 64 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