Sermorelin
We've tested 21 samples of Sermorelin sourced from 5 vendors between 20 Apr 2025 and 1 Mar 2026. Purity varies from 94.82% to 99.95%, and quantity can diverge by up to +/-97% vs advertised value.
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Vendors
| Tests | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Vendor | Rating | Count | Avg | Min | Max | Oldest | Most Recent | ||
 | ZLZ Peptide | 4 | 17 Jul 2025 | 20 Feb 2026 | |||||
 | SRY Labs | 2 | 20 Apr 2025 | 5 Aug 2025 | |||||
 | Peptide-S | 3 | 24 Jul 2025 | 20 Feb 2026 | |||||
 | Qing Li Peptide | 5 | 18 Sep 2025 | 30 Dec 2025 | |||||
| Shanghai Sigma Audley SSA | 7 | 10 Jul 2025 | 6 Nov 2025 | |||||
Most recent Sermorelin 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 |
| 20 Feb 2026 | ZLZ Peptide | View | 10mg | 9.94mg | -0.6% | 99.59% | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 20 Feb 2026 | Peptide-S | View | 5mg | 4.58mg | -8.4% | 98.70% | Sep 2, 2025 | (no data) | Lab E | Public | |
| 9 Jan 2026 | ZLZ Peptide | View | 5mg | 5.57mg | +11.4% | 99.85% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 30 Dec 2025 | Qing Li Peptide | View | 15mg | 0.5mg | -96.7% | 99.95% | (no batch ID) | No Label / Copper Crimp / Clear Cap | Lab E | Public | |
| 6 Dec 2025 | Qing Li Peptide | View | 10mg | 10.5mg | +5.0% | 99.95% | Oct 2,2025 | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 17 Nov 2025 | Qing Li Peptide | View | 10mg | 10.1mg | +1.0% | 99.50% | Sept 15,2025 | No Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 6 Nov 2025 | Shanghai Sigma Audley SSA | View | 2mg | 1.78mg | -11.0% | 98.88% | (no batch ID) | No Label / Silver Crimp / Blue Cap | Lab E | Public | |
Corrections
- 28 Nov 2025: Xianhong Tong XHT Peptides
- This sample was labeled as a Melanotan II 10 mg, when in fact it is a Sermorelin 5 mg. Test were entered in correct samples . Mix up was with sample xzvusxy