Tirzepatide Purity: 4006 Lab Tests Across 422 Vendors

465 studies on Tirzepatide curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.

We tested 4006 Tirzepatide batches across 422 manufacturers

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

99.62%
Avg purity
4006
Batches tested
422
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 →
(unknown) 74 99.7% View COA →

Recent certificates: #16760 (99.707%) · #16762 (99.853%) · #22208 (99.9%) · #22209 (99.9%) · #22296 (99.9%) · #22297 (99.8%)

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 72 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