Retatrutide(GLP-1, GIP, and GCGR agonist)
We've tested 1274 samples of Retatrutide sourced from 95 vendors between 2 Dec 2024 and 7 Jan 2026. Purity varies from 62.38% to 100.00%, and quantity can diverge by up to +/-260% vs advertised value.
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Vendors
| Tests | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Vendor | Rating | Count | Avg | Min | Max | Oldest | Most Recent | ||
 | 6 | 24 Jul 2025 | 4 Sep 2025 | ||||||
 | 11 | 17 Jul 2025 | 17 Nov 2025 | ||||||
 | 6 | 17 Dec 2024 | 16 Dec 2025 | ||||||
 | 7 | 14 Jan 2025 | 9 Oct 2025 | ||||||
 | 6 | 7 Oct 2025 | 24 Nov 2025 | ||||||
 | 7 | 22 Apr 2025 | 23 Jul 2025 | ||||||
| 2 | 16 Dec 2025 | 16 Dec 2025 | ||||||
| 2 | 2 Dec 2024 | 2 Dec 2025 | ||||||
 | 4 | 6 May 2025 | 21 May 2025 | ||||||
| 3 | 25 Jul 2025 | 29 Oct 2025 | ||||||
| 2 | 30 Jun 2025 | 11 Aug 2025 | ||||||
 | 4 | 6 May 2025 | 6 May 2025 | ||||||
 | 4 | 27 Feb 2025 | 20 Mar 2025 | ||||||
| 4 | 20 Jun 2025 | 12 Aug 2025 | ||||||
 | 5 | 16 Mar 2025 | 6 May 2025 | ||||||
 | 11 | 17 Dec 2024 | 1 Jan 2026 | ||||||
| 25 | 30 Jun 2025 | 7 Jan 2026 | ||||||
 | 7 | 14 Jan 2025 | 24 Jul 2025 | ||||||
| 7 | 4 Aug 2025 | 4 Nov 2025 | ||||||
| 18 | 24 Jul 2025 | 1 Jan 2026 | ||||||
| 6 | 30 Sep 2025 | 18 Nov 2025 | ||||||
 | 2 | 7 May 2025 | 7 May 2025 | ||||||
 | 4 | 13 Feb 2025 | 19 Feb 2025 | ||||||
 | 4 | 7 May 2025 | 21 May 2025 | ||||||
 | 4 | 13 Feb 2025 | 19 Feb 2025 | ||||||
| 2 | 5 Dec 2024 | 17 Nov 2025 | ||||||
 | 8 | 9 Jun 2025 | 16 Dec 2025 | ||||||
 | 6 | 22 Apr 2025 | 7 May 2025 | ||||||
| 16 | 4 Aug 2025 | 1 Jan 2026 | ||||||
 | 6 | 30 Apr 2025 | 4 Aug 2025 | ||||||
 | 7 | 3 Jun 2025 | 29 Dec 2025 | ||||||
| 6 | 16 Jul 2025 | 1 Jan 2026 | ||||||
| 8 | 3 Jul 2025 | 6 Nov 2025 | ||||||
| 18 | 20 Jun 2025 | 7 Jan 2026 | ||||||
| 41 | 4 Aug 2025 | 1 Jan 2026 | ||||||
 | 8 | 16 Mar 2025 | 6 Jan 2026 | ||||||
| 8 | 1 Sep 2025 | 7 Jan 2026 | ||||||
 | 12 | 17 Dec 2024 | 21 May 2025 | ||||||
 | 11 | 31 Mar 2025 | 23 Jul 2025 | ||||||
| 14 | 11 Aug 2025 | 7 Jan 2026 | ||||||
| 10 | 1 Sep 2025 | 16 Dec 2025 | ||||||
| 15 | 5 Dec 2024 | 7 Jan 2026 | ||||||
| 23 | 11 Jun 2025 | 29 Dec 2025 | ||||||
 | 6 | 31 Mar 2025 | 7 Jan 2026 | ||||||
 | 12 | 14 Jan 2025 | 6 Dec 2025 | ||||||
| 10 | 4 Aug 2025 | 17 Dec 2025 | ||||||
| 53 | 5 Dec 2024 | 29 Dec 2025 | ||||||
| 10 | 11 Aug 2025 | 17 Dec 2025 | ||||||
 | 2 | 14 Feb 2025 | 19 Feb 2025 | ||||||
 | 4 | 25 Apr 2025 | 6 May 2025 | ||||||
 | 5 | 31 Mar 2025 | 16 May 2025 | ||||||
 | 3 | 16 May 2025 | 23 Jul 2025 | ||||||
 | 4 | 16 May 2025 | 23 Jul 2025 | ||||||
 | 2 | 14 Jan 2025 | 23 Jan 2025 | ||||||
 | 24 | 20 Apr 2025 | 25 Nov 2025 | ||||||
 | 25 | 17 Dec 2024 | 9 Oct 2025 | ||||||
| 63 | 11 Jun 2025 | 1 Jan 2026 | ||||||
 | 9 | 17 Dec 2024 | 30 Apr 2025 | ||||||
| 20 | 20 Jun 2025 | 25 Nov 2025 | ||||||
 | 36 | 9 Jun 2025 | 7 Jan 2026 | ||||||
| 11 | 27 Jun 2025 | 1 Jan 2026 | ||||||
| 13 | 25 Jun 2025 | 17 Dec 2025 | ||||||
| 11 | 2 Dec 2024 | 11 Dec 2025 | ||||||
 | 2 | 20 May 2025 | 23 Oct 2025 | ||||||
 | 5 | 24 Apr 2025 | 21 May 2025 | ||||||
 | 5 | 27 Feb 2025 | 20 Mar 2025 | ||||||
| 10 | 23 Oct 2025 | 1 Jan 2026 | ||||||
 | 78 | 9 Jun 2025 | 7 Jan 2026 | ||||||
| 8 | 16 Jul 2025 | 17 Nov 2025 | ||||||
| 10 | 4 Nov 2025 | 7 Jan 2026 | ||||||
 | 34 | 17 Dec 2024 | 4 Aug 2025 | ||||||
| 35 | 3 Jun 2025 | 7 Jan 2026 | ||||||
| 17 | 6 Nov 2025 | 7 Jan 2026 | ||||||
 | 8 | 17 Dec 2024 | 31 Mar 2025 | ||||||
| 7 | 24 Oct 2025 | 29 Dec 2025 | ||||||
 | 7 | 16 Mar 2025 | 3 Jul 2025 | ||||||
 | 35 | 11 Jun 2025 | 7 Jan 2026 | ||||||
| 73 | 9 Jun 2025 | 29 Dec 2025 | ||||||
| 36 | 4 Sep 2025 | 7 Jan 2026 | ||||||
| 8 | 24 Jul 2025 | 1 Jan 2026 | ||||||
| 6 | 5 Aug 2025 | 30 Dec 2025 | ||||||
| 62 | 4 Aug 2025 | 7 Jan 2026 | ||||||
 | 58 | 11 Jun 2025 | 7 Jan 2026 | ||||||
| 33 | 20 Jun 2025 | 29 Dec 2025 | ||||||
 | 8 | 11 Aug 2025 | 7 Jan 2026 | ||||||
 | 4 | 13 Feb 2025 | 19 Feb 2025 | ||||||
| 3 | 11 Jun 2025 | 13 Oct 2025 | ||||||
| 4 | 20 Jun 2025 | 5 Oct 2025 | ||||||
| 1 | 20 Jun 2025 | 20 Jun 2025 | ||||||
| 1 | 24 Jul 2025 | 24 Jul 2025 | ||||||
| 1 | 10 Jun 2025 | 10 Jun 2025 | ||||||
 | 1 | 6 May 2025 | 6 May 2025 | ||||||
 | 1 | 3 Jun 2025 | 3 Jun 2025 | ||||||
| 1 | 3 Jul 2025 | 3 Jul 2025 | ||||||
| 1 | 3 Jul 2025 | 3 Jul 2025 | ||||||
Most recent Retatrutide 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 |
| 7 Jan 2026 | LiliPeptide | View | 10mg | ⚠️ Sample does not contain Retatrutide | (no batch ID) | No Label / Silver Crimp / Clear Blue Cap | Lab E | Public | |||
| 7 Jan 2026 | LiliPeptide | View | 20mg | 19mg | -5.0% | 99.95% | 10-20-2025 | No Label / Silver Crimp / Violet Cap | Lab E | Public | |
| 7 Jan 2026 | Qing Li Peptide | View | 10mg | 9.85mg | -1.5% | 99.60% | (no batch ID) | White Label / Silver Crimp / Clear Green Cap | Lab E | Public | |
| 7 Jan 2026 | Qing Li Peptide | View | 10mg | 10.5mg | +5.0% | 99.24% | (no batch ID) | No Label / Silver Crimp / Yellow Cap | Lab E | Public | |
| 7 Jan 2026 | LSPL | View | 40mg | 41mg | +2.5% | 99.15% | REDRT40-MFG:09/25/2025 | Silver Label / Silver Crimp / Clear Red Cap | Lab E | Public | |
| 7 Jan 2026 | Mai Peptide | View | 20mg | 18.1mg | -9.5% | 99.95% | November 4,2025 | White Label / Silver Crimp / Violet Cap | Lab E | Public | |
| 7 Jan 2026 | Liberty Peptides | View | 20mg | 21.4mg | +7.0% | 99.95% | (no batch ID) | No Label / Copper Crimp / Clear Cap | Lab E | Public | |
Corrections
- 17 Nov 2025: Peptide Sciences
- Test results for sample 3tbve3d 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.
- 14 Nov 2025: Peptide Sciences
- Test results for sample 87u9z6r were published from 8 to 14 Nov 2025, but did not belong to Peptide Sciences: the sample was identified as a counterfeit. They were removed from publishing.
- 10 Nov 2025: PeptiSlim
- The sample was misslabaled by the requester, actual quantity for this sample is 60mg, Quantity has been edited with correct value (previus value was 10 mg)
- 10 Nov 2025: PeptiSlim
- The sample was misslabaled by the requester, actual quantity for this sample is 10mg, Quantity has been edited with correct value (previus value was 60 mg)
- 5 Nov 2025: Bfflist AMO
- These were remade and reanalyzed by Lab G. They traced the discrepancy to a likely human error during preparation.
- 5 Nov 2025: Wuhan Wansheng Biotechnology
- These were remade and reanalyzed by Lab G. They traced the discrepancy to a likely human error during preparation.
- 5 Nov 2025: LiliPeptide
- Lab G mistakenly entered 92 mg instead of 9.2 mg.
- 29 Aug 2025: Peptide Sciences
- Batch identifier for Peptide Sciences Retatrutide 6mg vial tested 30 June was missing. Test score changed from 6.3 to 8.3.
- 15 Apr 2025: Polaris Peptides
- Lab B test 19 Feb 2025: updated quantity following the identification of a clerical error, value was erroneously listed as 6.25mg. Lab issued an updated test certificate on 7 Apr 2025.
- 15 Apr 2025: Limitless Life Nootropics
- Lab B test 19 Feb 2025: updated quantity following the identification of a clerical error, value was erroneously listed as 9.27mg. Lab issued an updated test certificate on 7 Apr 2025.
- 6 Apr 2025: Forever Young Pharmacy
- Lab A test 14 Feb 2025: updated compound identification, removed purity and quantity values. Error in analysis by lab, compound was incorrectly identified as Retatrutide. Lab issued an updated test certificate.
- 6 Apr 2025: Peptide Sciences
- Lab A test 14 Feb 2025: updated compound identification, removed purity and quantity values. Error in analysis by Lab, compound was incorrectly identified as Retatrutide. Lab issued an updated test certificate.