Tirzepatide(GLP-1 and GIP antagonist)
We've tested 100 samples of Tirzepatide sourced from 19 vendors between 17 Dec 2024 and 22 Apr 2025. Purity varies from 96.46% to 99.99%, and quantity can diverge by up to +/-84% vs advertised value.
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Vendors
| Tests | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Vendor | Rating | Count | Avg | Min | Max | Oldest | Most Recent | ||
 | Polaris Peptides | 9 | 17 Dec 2024 | 19 Feb 2025 | |||||
 | Skye Peptides | 5 | 17 Dec 2024 | 20 Mar 2025 | |||||
 | Planet Peptide | 3 | 17 Dec 2024 | 13 Feb 2025 | |||||
 | Verified Peptides | 4 | 13 Feb 2025 | 19 Feb 2025 | |||||
 | Coastal Peptides | 5 | 27 Feb 2025 | 20 Mar 2025 | |||||
 | PurePeptides | 4 | 27 Feb 2025 | 20 Mar 2025 | |||||
 | Forever Young Pharmacy | 3 | 2 Apr 2025 | 2 Apr 2025 | |||||
 | Peptide Sciences | 6 | 28 Mar 2025 | 22 Apr 2025 | |||||
 | Oasis Peptides | 6 | 14 Jan 2025 | 13 Feb 2025 | |||||
 | Loti Labs | 8 | 16 Mar 2025 | 25 Mar 2025 | |||||
 | NextechLabs | 6 | 14 Jan 2025 | 20 Mar 2025 | |||||
 | Amino Asylum | 2 | 14 Feb 2025 | 19 Feb 2025 | |||||
 | Peptide Crafters | 5 | 17 Dec 2024 | 20 Mar 2025 | |||||
 | Royal Peptides | 6 | 16 Mar 2025 | 25 Mar 2025 | |||||
 | Tydes | 7 | 17 Dec 2024 | 20 Mar 2025 | |||||
 | Paramount Peptides | 6 | 14 Jan 2025 | 20 Mar 2025 | |||||
 | Suaway Lab Research | 2 | 28 Mar 2025 | 28 Mar 2025 | |||||
 | Amino Amigos | 7 | 14 Jan 2025 | 20 Mar 2025 | |||||
 | Peptide Gurus | 6 | 16 Mar 2025 | 25 Mar 2025 | |||||
Most recent Tirzepatide tests
Samples are tested in commercial labs
| Quantity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Vendor | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 22 Apr 2025 | Peptide Sciences | 5mg | 4.270mg | -14.6% | 99.10% | TIR7920230179-5 | White, Orange / Orange Cap | Lab D | Finnrick | |
| 22 Apr 2025 | Peptide Sciences | 5mg | 4.130mg | -17.4% | 99.18% | TIR7920230179-5 | White, Orange / Orange Cap | Lab D | Finnrick | |
| 2 Apr 2025 | Forever Young Pharmacy | 15mg | 15.502mg | +3.4% | 98.82% | (no batch ID) | White Label / Blue Cap | Lab C | Public | |
| 2 Apr 2025 | Forever Young Pharmacy | 30mg | 29.040mg | -3.2% | 99.95% | (no batch ID) | White Label / Green Cap | Lab C | Public | |
| 2 Apr 2025 | Forever Young Pharmacy | 15mg | 13.691mg | -8.7% | 99.92% | (no batch ID) | White Label / Purple Cap | Lab C | Public | |
| 28 Mar 2025 | Suaway Lab Research | 10mg | 18.335mg | +83.3% | 99.97% | (no batch ID) | White Label / White Cap | Lab C | Finnrick | |
| 28 Mar 2025 | Peptide Sciences | 5mg | 4.290mg | -14.2% | 99.58% | TIR7920230179-5 | White, Orange / Orange Cap | Lab C | 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.