PT-141(Bremelanotide)
We've tested 99 samples of PT-141 sourced from 28 vendors between 16 Mar 2025 and 13 May 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 | ||||||
| 2 | 6 May 2026 | 6 May 2026 | ||||||
 | 3 | 25 Apr 2025 | 7 May 2025 | ||||||
 | 4 | 16 Mar 2025 | 7 May 2025 | ||||||
| 4 | 9 Oct 2025 | 28 Apr 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 | ||||||
 | 3 | 13 Jun 2025 | 12 Aug 2025 | ||||||
 | 4 | 7 May 2025 | 21 May 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 |
| 6 May 2026 | NuLife Peptides | View | 10mg | 11.2mg | +12.0% | 99.90% | PT1-12092025-J | White Label / Blue Crimp / Pink Cap | Lab E | Vendor | |
| 6 May 2026 | NuLife Peptides | View | 10mg | 13.9mg | +39.0% | 99.90% | PT1-12092025-J | White Label / Blue Crimp / Pink Cap | Lab E | Vendor | |
| 28 Apr 2026 | Uther | View | 10mg | 10.3mg | +3.0% | 99.90% | (no batch ID) | No Label / Black Crimp / Clear Red Cap | Lab E | Public | |
| 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 | ||
Launch with Finnrick
Some of the samples listed on this page were submitted by their vendor, as part of the Launch with Finnrick vendor support program.
The program is designed to help vendors get listed on the Finnrick web site while protecting the integrity of our rating system.
The vendor submitted four samples per product, two of which were tested by Finnrick for identity, purity and quantity according to our usual process. The vials were anonymized before being sent to the testing lab.