Melanotan II
We've tested 166 samples of Melanotan II sourced from 39 vendors between 19 Feb 2025 and 1 Jul 2026. Purity typically ranges from 97.65% to 99.93% (5th-95th percentile), and quantity typically diverges by up to +/-61% vs advertised value (95th percentile).
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Vendors
| Tests | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Vendor | Rating | Count | Avg | Min | Max | Oldest | Most Recent | ||
 | 7 | 22 Apr 2025 | 8 May 2026 | ||||||
 | 2 | 6 Feb 2026 | 6 Feb 2026 | ||||||
| 2 | 9 Oct 2025 | 9 Oct 2025 | ||||||
 | 4 | 16 May 2025 | 8 May 2026 | ||||||
 | 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 | ||||||
| 3 | 25 Nov 2025 | 6 Mar 2026 | ||||||
 | 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 | ||||||
| 5 | 4 Sep 2025 | 15 Jun 2026 | ||||||
 | 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 | 27 Feb 2025 | 13 May 2026 | ||||||
 | 6 | 22 Apr 2025 | 8 May 2025 | ||||||
 | 2 | 16 May 2025 | 16 May 2025 | ||||||
 | 3 | 16 Mar 2025 | 16 Mar 2025 | ||||||
| 4 | 30 Apr 2026 | 25 May 2026 | ||||||
| 4 | 10 Jun 2025 | 4 Aug 2025 | ||||||
| 5 | 9 Oct 2025 | 12 Jun 2026 | ||||||
| 4 | 4 Sep 2025 | 29 Mar 2026 | ||||||
Most recent Melanotan II tests
Samples are tested in commercial labs
| Quantity | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Vendor | Certificate | Test Score | Label | Tested | Difference | Purity | Endotoxins | Batch ID | Container | Tested At | Sent By |
| 15 Jun 2026 | Reta-Peptide | View | 10mg | 9.49mg | -5.1% | 99.80% | n/a | Mar 15,2026 | White label / Silver crimp / Yellow cap | Lab E | Public | |
| 12 Jun 2026 | Wuhan Wansheng Biotechnology | View | 10mg | 10.1mg | +1.0% | 99.90% | n/a | WWB-ML10-26-04 | (no data) | Lab E | Public | |
| 4 Jun 2026 | Reta-Peptide | View | 10mg | 10.4mg | +4.0% | 99.60% | n/a | March 15 2026 | No label / Silver crimp / Yellow cap | Lab E | Public | |
| 25 May 2026 | Shanghai ERP peptide Biotechnology | View | 10mg | 10.2mg | +2.0% | 99.80% | n/a | (no batch ID) | (no data) | Lab G | Public | |
| 25 May 2026 | Shanghai ERP peptide Biotechnology | View | 10mg | 10.6mg | +6.0% | 99.80% | n/a | (no batch ID) | (no data) | Lab G | Public | |
| 13 May 2026 | Peptides For Sale | View | 10mg | 4.03mg | -59.7% | 97.60% | below LOQ | 031 | White Label / Silver Crimp / Yellow Cap | Lab E | Public | |
| 8 May 2026 | Injectify | View | 10mg | 10.1mg | +1.0% | 99.90% | n/a | PE2401-662 | Black Label / Silver Crimp / Yellow Cap | Lab G | Public | |