Tirzepatide(GLP-1 and GIP antagonist)
We've tested 188 samples of Tirzepatide sourced from 36 vendors between 17 Dec 2024 and 3 Jul 2025. Purity varies from 96.46% to 99.99%, and quantity can diverge by up to +/-100% vs advertised value.
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Vendors
| Tests | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Vendor | Rating | Count | Avg | Min | Max | Oldest | Most Recent | ||
 | Polaris Peptides | 13 | 17 Dec 2024 | 7 May 2025 | |||||
 | Skye Peptides | 9 | 17 Dec 2024 | 21 May 2025 | |||||
 | Atomik Labz | 4 | 6 May 2025 | 7 May 2025 | |||||
 | Nuscience Peptides | 2 | 7 May 2025 | 7 May 2025 | |||||
 | Verified Peptides | 4 | 13 Feb 2025 | 19 Feb 2025 | |||||
 | Simple Peptide | 4 | 25 Apr 2025 | 7 May 2025 | |||||
 | PurePeptides | 4 | 27 Feb 2025 | 20 Mar 2025 | |||||
 | Coastal Peptides | 5 | 27 Feb 2025 | 20 Mar 2025 | |||||
 | Pharma Grade Peptides | 2 | 21 May 2025 | 21 May 2025 | |||||
 | Planet Peptide | 13 | 17 Dec 2024 | 27 Jun 2025 | |||||
 | Oasis Peptides | 6 | 14 Jan 2025 | 13 Feb 2025 | |||||
 | Pure Rawz | 4 | 7 May 2025 | 21 May 2025 | |||||
 | Forever Young Pharmacy | 3 | 2 Apr 2025 | 2 Apr 2025 | |||||
 | Eternal Peptides | 4 | 7 May 2025 | 21 May 2025 | |||||
 | Alpha-Gen | 5 | 24 Apr 2025 | 21 May 2025 | |||||
 | SRY Labs | 3 | 15 May 2025 | 11 Jun 2025 | |||||
 | NextechLabs | 6 | 14 Jan 2025 | 20 Mar 2025 | |||||
 | Shanghai OuDaXin New Material Technology Center | 7 | 3 Jun 2025 | 20 Jun 2025 | |||||
 | Peptide Sciences | 10 | 28 Mar 2025 | 30 Jun 2025 | |||||
 | Tydes | 10 | 17 Dec 2024 | 30 Apr 2025 | |||||
 | Loti Labs | 10 | 16 Mar 2025 | 7 May 2025 | |||||
 | Royal Peptides | 6 | 16 Mar 2025 | 25 Mar 2025 | |||||
 | Elite Research USA | 2 | 20 Jun 2025 | 27 Jun 2025 | |||||
 | Zztai Peptide | 4 | 9 Jun 2025 | 29 Jun 2025 | |||||
 | Amino Asylum | 2 | 14 Feb 2025 | 19 Feb 2025 | |||||
 | Zhejiang Yichenkang Biotechnology | 4 | 11 Jun 2025 | 30 Jun 2025 | |||||
 | Peptide Crafters | 5 | 17 Dec 2024 | 20 Mar 2025 | |||||
 | Peptide-S | 5 | 9 Jun 2025 | 29 Jun 2025 | |||||
 | Paramount Peptides | 9 | 14 Jan 2025 | 7 May 2025 | |||||
 | Suaway Lab Research | 4 | 28 Mar 2025 | 16 May 2025 | |||||
 | Amino Amigos | 7 | 14 Jan 2025 | 20 Mar 2025 | |||||
 | Peptide Gurus | 6 | 16 Mar 2025 | 25 Mar 2025 | |||||
 | Deuschem | 3 | 13 Jun 2025 | 29 Jun 2025 | |||||
| TSC Top Supplements China | 1 | 3 Jun 2025 | 3 Jun 2025 | |||||
 | Oupeptide | 1 | 3 Jun 2025 | 3 Jun 2025 | |||||
 | Hunan Ruiwang Technology Center | 1 | 3 Jun 2025 | 3 Jun 2025 | |||||
Most recent Tirzepatide tests
Samples are tested in commercial labs
| Quantity | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Vendor | Certificate | Test Score | Label | Batch | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 30 Jun 2025 | Zhejiang Yichenkang Biotechnology | View | 5mg | (no batch claim) | 3.750mg | -25.0% | 99.69% | (no batch ID) | No Label / Silver Crimp / Black Cap | Lab E | Finnrick | |
| 30 Jun 2025 | Peptide Sciences | View | 10mg | (no batch claim) | 8.787mg | -12.1% | 99.85% | TIR7920250409-10 | White Label / Blue Crimp / Clear Blue Cap | Lab A | Public | |
| 29 Jun 2025 | Deuschem | View | 10mg | ⚠️ Sample does not contain Tirzepatide | TQ21884 | White Label / Silver Crimp / Blue Cap | Lab E | Finnrick | ||||
| 29 Jun 2025 | Peptide-S | View | 30mg | (no batch claim) | 40.800mg | +36.0% | 99.66% | (no batch ID) | No Label / Silver Crimp / Pink Cap | Lab E | Public | |
| 29 Jun 2025 | Zztai Peptide | View | 15mg | (no batch claim) | 13.600mg | -9.3% | 99.59% | 250515 | No Label / Silver Crimp / Violet Cap | Lab E | Public | |
| 27 Jun 2025 | Deuschem | View | 10mg | ⚠️ Sample does not contain Tirzepatide | TQ21884 | White Label / Silver Crimp / Blue Cap | Lab A | Finnrick | ||||
| 27 Jun 2025 | Elite Research USA | View | 10mg | (no batch claim) | 9.189mg | -8.1% | 99.75% | (no batch ID) | Black Label / Silver Crimp / Red Cap | Lab A | Finnrick | |
Corrections
- 17 Apr 2025: NextechLabs
- Lab A test 27 Feb 2025, lab C test 28 Feb 2025, lab B test 30 Mar 2025: updated batch claim quantity, label claim was clear, erroneously listed 10mg.