Tesamorelin
We've tested 263 samples of Tesamorelin sourced from 31 vendors between 7 May 2025 and 4 Mar 2026. Purity varies from 12.70% to 100.00%, and quantity can diverge by up to +/-101% vs advertised value.
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Vendors
| Tests | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Vendor | Rating | Count | Avg | Min | Max | Oldest | Most Recent | ||
 | Pure Tested Peptides | 3 | 9 Oct 2025 | 26 Jan 2026 | |||||
| Uther | 4 | 24 Jul 2025 | 10 Feb 2026 | |||||
| Peptide Partners | 11 | 30 Jan 2026 | 20 Feb 2026 | |||||
 | Skye Peptides | 5 | 14 May 2025 | 4 Feb 2026 | |||||
| Xingruida XDR | 6 | 17 Jul 2025 | 11 Feb 2026 | |||||
| Tianjin Finder Chemical TFC | 5 | 11 Aug 2025 | 15 Feb 2026 | |||||
| HXNet | 9 | 24 Jul 2025 | 20 Feb 2026 | |||||
 | Peptide-S | 7 | 13 Jun 2025 | 15 Jan 2026 | |||||
| Xingtai Jiachuang Technology | 8 | 4 Nov 2025 | 20 Feb 2026 | |||||
| Yiwu Aozuo Trading Co | 7 | 9 Sep 2025 | 2 Feb 2026 | |||||
 | Nexaph | 21 | 29 Jun 2025 | 2 Mar 2026 | |||||
| Reta-Peptide | 10 | 9 Sep 2025 | 2 Mar 2026 | |||||
 | Peptides 4 Research | 4 | 7 May 2025 | 21 May 2025 | |||||
| Tianjin Ruiwang New Material Technology Co | 7 | 9 Sep 2025 | 4 Feb 2026 | |||||
 | Peptide Sciences | 2 | 9 Oct 2025 | 20 Feb 2026 | |||||
| ZLZ Peptide | 11 | 4 Aug 2025 | 20 Feb 2026 | |||||
 | Oupeptide | 9 | 10 Aug 2025 | 26 Feb 2026 | |||||
 | SRY Labs | 11 | 27 Jun 2025 | 2 Feb 2026 | |||||
| Shanghai Sigma Audley SSA | 21 | 9 Jun 2025 | 15 Jan 2026 | |||||
| Xian Yihang Technology | 6 | 13 Jun 2025 | 13 Feb 2026 | |||||
| Wuhan Wansheng Biotechnology | 20 | 11 Aug 2025 | 4 Mar 2026 | |||||
| HK Peptides | 26 | 4 Aug 2025 | 20 Feb 2026 | |||||
| LiliPeptide | 9 | 17 Nov 2025 | 20 Feb 2026 | |||||
 | Shanghai OuDaXin New Material Technology Center | 8 | 11 Aug 2025 | 26 Feb 2026 | |||||
| TSC Top Supplements China | 6 | 27 Jun 2025 | 9 Oct 2025 | |||||
| LN Peptides | 6 | 21 Oct 2025 | 2 Mar 2026 | |||||
 | Qing Li Peptide | 16 | 29 Jun 2025 | 20 Feb 2026 | |||||
| Dragon Pharma | 1 | 24 Jul 2025 | 24 Jul 2025 | |||||
| Evolve BioPep | 1 | 27 Jun 2025 | 27 Jun 2025 | |||||
| Peptide Ark | 1 | 3 Mar 2026 | 3 Mar 2026 | |||||
| Regenerative Research | 1 | 29 Jun 2025 | 29 Jun 2025 | |||||
| Zhang TY | 1 | 29 Jun 2025 | 29 Jun 2025 | |||||
Most recent Tesamorelin 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 |
| 4 Mar 2026 | Wuhan Wansheng Biotechnology | View | 10mg | (no batch claim) | 10.8mg | +8.0% | 99.72% | (no batch ID) | No Label / Silver Crimp / Clear Blue Cap | Lab E | Public | |
| 2 Mar 2026 | LN Peptides | View | 10mg | (no batch claim) | 10.3mg | +3.0% | 98.47% | TES10012026LN | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 2 Mar 2026 | Reta-Peptide | View | 5mg | (no batch claim) | 5.13mg | +2.6% | 99.90% | Nov 8 2025 | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 2 Mar 2026 | Nexaph | View | 10mg | 11.9mg | 11.7mg | -1.5% | 99.11% | TES1001172026-16 | No Label / Silver Crimp / Clear Blue Cap | Lab E | Public | |
| 26 Feb 2026 | Oupeptide | View | 5mg | (no batch claim) | 5.13mg | +2.6% | 99.00% | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 26 Feb 2026 | LN Peptides | View | 10mg | (no batch claim) | 11.5mg | +15.0% | 99.72% | (no batch ID) | No Label / Silver Crimp / Clear Blue Cap | Lab E | Public | |
| 26 Feb 2026 | LN Peptides | View | 20mg | (no batch claim) | 22.8mg | +14.0% | 98.88% | (no batch ID) | No Label / Silver Crimp / Clear Pink Cap | Lab E | Public | |
Corrections
- 17 Nov 2025: Peptide Sciences
- Test results for sample pst3r4y were published from 31 Oct to 17 Nov 2025, but did not belong to Peptide Sciences: the sample was misidentified, and re-attributed to the correct vendor.