Melanotan II
We've tested 141 samples of Melanotan II sourced from 34 vendors between 19 Feb 2025 and 5 May 2026. Purity typically ranges from 97.66% to 99.95% (5th-95th percentile), and quantity typically diverges by up to +/-59% vs advertised value (95th percentile).
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Mail in a sample for free testing (US only, terms apply)
Vendors
| Tests | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Vendor | Rating | Count | Avg | Min | Max | Oldest | Most Recent | ||
 | 6 | 22 Apr 2025 | 21 May 2025 | ||||||
 | 2 | 6 Feb 2026 | 6 Feb 2026 | ||||||
| 2 | 9 Oct 2025 | 9 Oct 2025 | ||||||
 | 3 | 16 May 2025 | 14 Jun 2025 | ||||||
 | 4 | 8 May 2025 | 21 May 2025 | ||||||
 | 4 | 8 May 2025 | 21 May 2025 | ||||||
 | 4 | 8 May 2025 | 21 May 2025 | ||||||
 | 3 | 10 Jul 2025 | 3 Oct 2025 | ||||||
| 10 | 16 Jul 2025 | 28 Apr 2026 | ||||||
 | 4 | 19 Feb 2025 | 19 Feb 2025 | ||||||
 | 5 | 27 Feb 2025 | 20 Mar 2025 | ||||||
 | 4 | 14 Jun 2025 | 4 Aug 2025 | ||||||
 | 4 | 19 Feb 2025 | 19 Feb 2025 | ||||||
 | 5 | 16 May 2025 | 4 Aug 2025 | ||||||
| 2 | 18 Jul 2025 | 31 Jul 2025 | ||||||
 | 3 | 25 Apr 2025 | 8 May 2025 | ||||||
 | 4 | 27 Feb 2025 | 20 Mar 2025 | ||||||
 | 4 | 22 Apr 2025 | 16 May 2025 | ||||||
 | 7 | 18 Jul 2025 | 13 Mar 2026 | ||||||
 | 10 | 19 Feb 2025 | 19 Feb 2025 | ||||||
 | 2 | 20 May 2025 | 20 May 2025 | ||||||
 | 5 | 19 Feb 2025 | 25 Mar 2026 | ||||||
 | 4 | 8 May 2025 | 16 May 2025 | ||||||
 | 2 | 19 Feb 2025 | 19 Feb 2025 | ||||||
 | 3 | 16 Mar 2025 | 16 Mar 2025 | ||||||
 | 4 | 27 Feb 2025 | 20 Mar 2025 | ||||||
 | 4 | 27 Feb 2025 | 20 Mar 2025 | ||||||
 | 2 | 21 May 2025 | 21 May 2025 | ||||||
 | 3 | 25 Apr 2025 | 30 Apr 2025 | ||||||
 | 6 | 22 Apr 2025 | 8 May 2025 | ||||||
 | 5 | 27 Feb 2025 | 20 Mar 2025 | ||||||
 | 2 | 16 May 2025 | 16 May 2025 | ||||||
 | 3 | 16 Mar 2025 | 16 Mar 2025 | ||||||
| 4 | 10 Jun 2025 | 4 Aug 2025 | ||||||
Most recent Melanotan II 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 |
| 28 Apr 2026 | HK Peptides | View | 10mg | (no batch claim) | 8.81mg | -11.9% | 99.90% | (no batch ID) | No Label / Silver Crimp / Yellow Cap | Lab E | Public | |
| 25 Mar 2026 | Oasis Peptides | View | 10.5mg | 10.5mg | 12.1mg | +15.2% | 99.90% | 072425 | Green Label / Silver Crimp / Orange Cap | Lab G | Public | |
| 13 Mar 2026 | Qing Li Peptide | View | 10mg | (no batch claim) | 10.3mg | +3.0% | 99.80% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab G | Public | |
| 26 Feb 2026 | HK Peptides | View | 10mg | (no batch claim) | 10.3mg | +3.0% | 99.19% | ML10 | No Label / Silver Crimp / Yellow Cap | Lab E | Public | |
| 15 Feb 2026 | HK Peptides | View | 10mg | (no batch claim) | 10.9mg | +9.0% | 99.80% | (no batch ID) | No Label / Silver Crimp / Yellow Cap | Lab G | Public | |
| 9 Feb 2026 | Qing Li Peptide | View | 10mg | (no batch claim) | 9.75mg | -2.5% | 99.90% | Dec 2, 2025 | White Label / Silver Crimp / Yellow Cap | Lab E | Public | |
| 6 Feb 2026 | Bulk Peptide Wholesale | View | 10mg | (no batch claim) | 10.2mg | +2.0% | 99.87% | MT8524314 | White Label / Silver Crimp / Yellow Cap | Lab E | Vendor | |
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.