Tesamorelin
We've tested 101 samples of Tesamorelin sourced from 17 vendors between 7 May 2025 and 18 Nov 2025. Purity varies from 12.70% to 99.95%, and quantity can diverge by up to +/-100% vs advertised value.
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Vendors
| Tests | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Vendor | Rating | Count | Avg | Min | Max | Oldest | Most Recent | ||
 | 3 | 24 Jul 2025 | 4 Aug 2025 | ||||||
 | 3 | 14 May 2025 | 5 Aug 2025 | ||||||
| 9 | 4 Aug 2025 | 17 Nov 2025 | ||||||
 | 6 | 13 Jun 2025 | 9 Oct 2025 | ||||||
 | 15 | 29 Jun 2025 | 17 Nov 2025 | ||||||
| 6 | 11 Aug 2025 | 29 Oct 2025 | ||||||
 | 10 | 27 Jun 2025 | 17 Nov 2025 | ||||||
| 20 | 9 Jun 2025 | 21 Oct 2025 | ||||||
 | 12 | 29 Jun 2025 | 21 Oct 2025 | ||||||
| 6 | 27 Jun 2025 | 9 Oct 2025 | ||||||
 | 4 | 7 May 2025 | 21 May 2025 | ||||||
 | 1 | 9 Oct 2025 | 9 Oct 2025 | ||||||
| 1 | 24 Jul 2025 | 24 Jul 2025 | ||||||
| 1 | 24 Jul 2025 | 24 Jul 2025 | ||||||
| 1 | 27 Jun 2025 | 27 Jun 2025 | ||||||
| 1 | 29 Jun 2025 | 29 Jun 2025 | ||||||
| 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 |
| 17 Nov 2025 | HK Peptides | View | 5mg | (no batch claim) | 5.470mg | +9.4% | 99.95% | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 17 Nov 2025 | SRY Labs | View | 5mg | (no batch claim) | 7.610mg | +52.2% | 99.95% | (no batch ID) | No Label / Silver Crimp / Green Cap | Lab E | Public | |
| 17 Nov 2025 | Nexaph | View | 10mg | 12.1mg | 11.500mg | -4.9% | 99.76% | TES1008272025-12 | No Label / Blue Crimp / Clear Cap | Lab E | Public | |
| 17 Nov 2025 | Nexaph | View | 10mg | (no batch claim) | 11.000mg | +10.0% | 98.91% | Tes1010162025-13 | No Label / Black Crimp / Brown Cap | Lab E | Public | |
| 4 Nov 2025 | Nexaph | View | 10mg | (no batch claim) | 10.200mg | +2.0% | 98.49% | (no batch ID) | No Label / Silver Crimp / Black Cap | Lab E | Public | |
| 29 Oct 2025 | HK Peptides | View | 10mg | (no batch claim) | 9.790mg | -2.1% | 97.68% | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 29 Oct 2025 | Wuhan Wansheng Biotechnology | View | 10mg | (no batch claim) | 10.000mg | 99.06% | (no batch ID) | No Label / Silver Crimp / Black 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.