PT-141(Bremelanotide)
We've tested 96 samples of PT-141 sourced from 27 vendors between 16 Mar 2025 and 25 Mar 2026. Purity typically ranges from 96.09% to 99.95% (5th-95th percentile), and quantity typically diverges by up to +/-51% vs advertised value (95th percentile).
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Vendors
| Tests | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Vendor | Rating | Count | Avg | Min | Max | Oldest | Most Recent | ||
 | 6 | 7 May 2025 | 12 Aug 2025 | ||||||
 | 6 | 6 Aug 2025 | 19 Aug 2025 | ||||||
 | 6 | 31 Jul 2025 | 18 Mar 2026 | ||||||
 | 2 | 3 Oct 2025 | 3 Oct 2025 | ||||||
 | 4 | 13 Jun 2025 | 11 Aug 2025 | ||||||
 | 2 | 6 Feb 2026 | 6 Feb 2026 | ||||||
 | 2 | 16 Mar 2025 | 16 Mar 2025 | ||||||
 | 3 | 25 Apr 2025 | 7 May 2025 | ||||||
 | 4 | 16 Mar 2025 | 7 May 2025 | ||||||
| 3 | 9 Oct 2025 | 6 Mar 2026 | ||||||
 | 2 | 7 May 2025 | 7 May 2025 | ||||||
 | 2 | 21 May 2025 | 21 May 2025 | ||||||
| 2 | 26 Jan 2026 | 26 Jan 2026 | ||||||
 | 3 | 25 Apr 2025 | 7 May 2025 | ||||||
| 5 | 31 Aug 2025 | 15 Jan 2026 | ||||||
 | 2 | 13 Jun 2025 | 12 Aug 2025 | ||||||
 | 4 | 7 May 2025 | 21 May 2025 | ||||||
 | 3 | 13 Jun 2025 | 12 Aug 2025 | ||||||
| 7 | 19 Aug 2025 | 10 Mar 2026 | ||||||
 | 4 | 13 Jun 2025 | 4 Aug 2025 | ||||||
 | 2 | 7 May 2025 | 7 May 2025 | ||||||
| 8 | 25 Sep 2025 | 10 Feb 2026 | ||||||
 | 3 | 16 Mar 2025 | 16 Mar 2025 | ||||||
 | 2 | 26 Jun 2025 | 29 Jun 2025 | ||||||
| 5 | 1 Sep 2025 | 23 Oct 2025 | ||||||
 | 1 | 24 Jul 2025 | 24 Jul 2025 | ||||||
 | 1 | 16 Mar 2025 | 16 Mar 2025 | ||||||
Most recent PT-141 tests
Samples are tested in commercial labs
| Quantity | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Vendor | Certificate | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 18 Mar 2026 | Qing Li Peptide | View | 10mg | 11mg | +10.0% | 99.70% | October 2,2025 | White Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 10 Mar 2026 | HK Peptides | View | 10mg | 17.2mg | +72.0% | 99.70% | (no batch ID) | No Label / Silver Crimp / Green Cap | Lab E | Public | |
| 6 Mar 2026 | Uther | View | 10mg | 8.44mg | -15.6% | 99.90% | (no batch ID) | White Label / Black Crimp / Clear Cap | Lab E | Public | |
| 2 Mar 2026 | Qing Li Peptide | View | 10mg | 10mg | 99.24% | Jan 2, 2026 | White Label / Silver Crimp / Blue Cap | Lab E | Public | ||
| 1 Mar 2026 | HK Peptides | View | 10mg | 10mg | 99.80% | (no batch ID) | No Label / Silver Crimp / Green Cap | Lab G | Public | ||
| 20 Feb 2026 | HK Peptides | View | 10mg | 10.4mg | +4.0% | 99.90% | Green Lid P41 | No Label / Silver Crimp / Green Cap | Lab E | Public | |
| 10 Feb 2026 | LiliPeptide | View | 10mg | 8.6mg | -14.0% | 99.90% | (no batch ID) | No Label / Silver Crimp / Red Cap | Lab G | Public | |