Semaglutide(GLP-1 agonist)
We've tested 302 samples of Semaglutide sourced from 50 vendors between 17 Dec 2024 and 26 Feb 2026. Purity varies from 88.19% to 100.00%, and quantity can diverge by up to +/-488% vs advertised value.
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Vendors
| Tests | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Vendor | Rating | Count | Avg | Min | Max | Oldest | Most Recent | ||
 | 9 | 17 Dec 2024 | 20 Mar 2025 | ||||||
 | 8 | 17 Dec 2024 | 6 May 2025 | ||||||
 | 7 | 22 Apr 2025 | 5 May 2025 | ||||||
 | 7 | 14 Jan 2025 | 20 Mar 2025 | ||||||
 | 10 | 17 Dec 2024 | 20 Mar 2025 | ||||||
 | 14 | 17 Dec 2024 | 22 Jul 2025 | ||||||
 | 8 | 9 Jul 2025 | 26 Jan 2026 | ||||||
 | 2 | 14 Jan 2025 | 23 Jan 2025 | ||||||
 | 4 | 16 May 2025 | 22 Jul 2025 | ||||||
| 2 | 30 Dec 2025 | 30 Dec 2025 | ||||||
 | 4 | 6 May 2025 | 21 May 2025 | ||||||
 | 4 | 13 Feb 2025 | 19 Feb 2025 | ||||||
 | 4 | 14 Jun 2025 | 5 Aug 2025 | ||||||
 | 2 | 14 Feb 2025 | 19 Feb 2025 | ||||||
| 3 | 9 Oct 2025 | 29 Dec 2025 | ||||||
 | 4 | 27 Feb 2025 | 20 Mar 2025 | ||||||
 | 3 | 16 May 2025 | 22 Jul 2025 | ||||||
 | 5 | 29 Jun 2025 | 9 Jan 2026 | ||||||
| 4 | 21 Oct 2025 | 13 Dec 2025 | ||||||
 | 4 | 6 May 2025 | 6 May 2025 | ||||||
 | 5 | 17 Dec 2024 | 19 Feb 2025 | ||||||
 | 4 | 25 Apr 2025 | 6 May 2025 | ||||||
 | 5 | 28 Mar 2025 | 24 Oct 2025 | ||||||
 | 6 | 16 Mar 2025 | 25 Mar 2025 | ||||||
 | 7 | 16 Mar 2025 | 3 Aug 2025 | ||||||
 | 14 | 14 Apr 2025 | 10 Sep 2025 | ||||||
 | 5 | 16 Jul 2025 | 15 Jan 2026 | ||||||
 | 6 | 22 Apr 2025 | 7 May 2025 | ||||||
 | 5 | 28 Mar 2025 | 22 Jul 2025 | ||||||
 | 4 | 7 May 2025 | 21 May 2025 | ||||||
 | 4 | 29 Jun 2025 | 15 Jan 2026 | ||||||
 | 5 | 24 Apr 2025 | 21 May 2025 | ||||||
| 3 | 29 Jun 2025 | 25 Nov 2025 | ||||||
 | 4 | 7 May 2025 | 16 May 2025 | ||||||
 | 16 | 17 Dec 2024 | 12 Aug 2025 | ||||||
 | 9 | 14 Jan 2025 | 6 May 2025 | ||||||
 | 9 | 25 Apr 2025 | 5 Aug 2025 | ||||||
 | 14 | 11 Jun 2025 | 22 Jul 2025 | ||||||
| 6 | 14 Jun 2025 | 5 Aug 2025 | ||||||
 | 2 | 7 May 2025 | 7 May 2025 | ||||||
 | 4 | 13 Feb 2025 | 19 Feb 2025 | ||||||
| 4 | 4 Sep 2025 | 17 Dec 2025 | ||||||
 | 9 | 17 Dec 2024 | 30 Apr 2025 | ||||||
| 9 | 29 Jun 2025 | 30 Oct 2025 | ||||||
 | 4 | 16 Mar 2025 | 25 Mar 2025 | ||||||
 | 4 | 27 Feb 2025 | 20 Mar 2025 | ||||||
| 8 | 11 Jun 2025 | 10 Feb 2026 | ||||||
 | 6 | 28 Feb 2025 | 28 Mar 2025 | ||||||
 | 6 | 5 Aug 2025 | 29 Jan 2026 | ||||||
 | 4 | 14 Jan 2025 | 13 Feb 2025 | ||||||
Most recent Semaglutide 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 |
| 10 Feb 2026 | ZLZ Peptide | View | 10mg | 7.7mg | -23.0% | 99.80% | Z121425 | White Label / Silver Crimp / White Cap | Lab G | Public | |
| 29 Jan 2026 | Oupeptide | View | 10mg | ⚠️ Sample does not contain Semaglutide | (no batch ID) | White Label / Silver Crimp / White Cap | Lab E | Public | |||
| 26 Jan 2026 | HK Peptides | View | 30mg | 32.6mg | +8.7% | 99.90% | (no batch ID) | No Label / Silver Crimp / Clear Cap | Lab G | Public | |
| 26 Jan 2026 | ZLZ Peptide | View | 30mg | 25.3mg | -15.7% | 99.90% | (no batch ID) | No Label / Silver Crimp / Clear Pink Cap | Lab G | Public | |
| 15 Jan 2026 | Peptide-S | View | 5mg | 6mg | +20.0% | 99.80% | Dec 2, 2025 | No Label / Silver Crimp / Blue Cap | Lab G | Public | |
| 15 Jan 2026 | SRY Labs | View | 15mg | 14.2mg | -5.3% | 99.80% | SRY S15 - (A) | No Label / Copper Crimp / Clear Cap | Lab G | Public | |
| 15 Jan 2026 | ZLZ Peptide | View | 15mg | 18.9mg | +26.0% | 99.80% | ZLZ S15 - (B) | No Label / Black Crimp / Clear Cap | Lab G | Public | |
Corrections
- 17 Nov 2025: Peptide Sciences
- Test results for sample cjkyg7x 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.
- 10 Mar 2025: Peptide Crafters
- Lab C tests 10 Mar 2025: error for Batch Qty on test result SPL-0511-S01, corrected with new result from Lab