Peptide Sciences
Retatrutide
Finnrick tested 36 samples of Retatrutide (GLP-1, GIP, and GCGR agonist) from Peptide Sciences between 17 Dec 2024 and 13 Feb 2026. Test scores average below 4 or some scores below 3, and at least 6 tests, warrant a confident Finnrick Rating of E (Bad).
Finnrick Rating™
Peptide Sciences
Retatrutide
Tested 36 Samples
Last test 13 Feb 2026
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All Retatrutide tests from Peptide Sciences
Samples are tested in commercial labs
Tests Count
36
Scores
AVGMINMAX
Last
13 Feb 2026
First
17 Dec 2024
| Quantity | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Endotoxins | Batch ID | Container | Tested At | Sent By |
| 13 Feb 2026 | View | 6mg | 6.05mg | +0.8% | 99.90% | below LOQ | V19920250814-6 | White Label / Blue Crimp / Pink Cap | Lab E | Public | |
| 11 Feb 2026 | View | 30mg | 29.8mg | -0.7% | 99.90% | n/a | 309018 11/22/2025 | No Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 4 Aug 2025 | View | 6mg | 5.75mg | -4.2% | 99.31% | n/a | VI9920250415-6 | White Label / Blue Crimp / Pink Cap | Lab D | Public | |
| 4 Aug 2025 | View | 12mg | 11.09mg | -7.6% | 99.28% | n/a | (no batch ID) | (no data) | Lab D | Public | |
| 17 Jul 2025 | View | 5mg | 4.86mg | -2.8% | 99.95% | n/a | (no batch ID) | Blue Label / Silver Crimp / Blue Cap | Lab E | Public | |
| 3 Jul 2025 | View | 6mg | 4.98mg | -17.0% | 99.77% | n/a | VI9920250415-6 | White Label / Blue Crimp / Pink Cap | Lab E | Public | |
| 3 Jul 2025 | View | 12mg | 9.36mg | -22.0% | 99.54% | n/a | VI9920250417-12 | White Label / Blue Crimp / Brown Cap | Lab E | Public | |
| 30 Jun 2025 | View | 6mg | 5.44mg | -9.3% | 99.74% | n/a | VI9920250415-6 | White Label / Blue Crimp / Pink Cap | Lab A | Public | |
| 27 Jun 2025 | View | 6mg | 5.25mg | -12.5% | 99.47% | n/a | VI9920250415-6 | White Label / Blue Crimp / Pink Cap | Lab A | Public | |
| 11 Jun 2025 | View | 16mg | 12.3mg | -23.1% | 99.70% | n/a | RET9920250212-16 | White Label / Blue Crimp / Clear Teal Cap | Lab E | Public | |
| 7 May 2025 | View | 6mg | ⚠️ Sample does not contain Retatrutide | n/a | RET7920231109-6 | White, Orange Label / Purple Crimp / Orange Cap | Lab E | Finnrick | |||
| 7 May 2025 | View | 16mg | 13.6mg | -15.0% | 100.00% | n/a | RET9920241120-16 | White, Orange Label / Blue Crimp / Turquoise Cap | Lab E | Finnrick | |
| 7 May 2025 | View | 16mg | 13.6mg | -15.0% | 100.00% | n/a | RET9920241120-16 | White, Orange Label / Blue Crimp / Turquoise Cap | Lab E | Finnrick | |
| 6 May 2025 | View | 12mg | 10.1mg | -15.8% | 98.83% | n/a | RET9920241222-12 | White, Orange Label / Black Crimp / Red Cap | Lab E | Finnrick | |
| 6 May 2025 | View | 12mg | 12.13mg | +1.1% | 99.95% | n/a | RET9920241222-12 | White, Orange Label / Black Crimp / Red Cap | Lab C | Finnrick | |
| 6 May 2025 | View | 12mg | 12.17mg | +1.4% | 99.95% | n/a | RET9920241222-12 | White, Orange Label / Black Crimp / Red Cap | Lab C | Finnrick | |
| 5 May 2025 | View | 12mg | 11.56mg | -3.7% | 99.79% | n/a | RET9920241222-12 | White, Orange Label / Black Crimp / Red Cap | Lab B | Finnrick | |
| 5 May 2025 | View | 12mg | 11.51mg | -4.1% | 99.82% | n/a | RET9920241222-12 | White, Orange Label / Black Crimp / Red Cap | Lab B | Finnrick | |
| 25 Apr 2025 | View | 6mg | ⚠️ Sample does not contain Retatrutide | n/a | RET7920231109-6 | White Label / Purple Crimp / Orange Cap | Lab F | Finnrick | |||
| 22 Apr 2025 | View | 12mg | 10.52mg | -12.3% | 99.71% | n/a | RET9920241222-12 | White, Orange Label / Black Crimp / Red Cap | Lab D | Finnrick | |
| 22 Apr 2025 | View | 12mg | 10.48mg | -12.7% | 99.56% | n/a | RET9920241222-12 | White, Orange Label / Black Crimp / Red Cap | Lab D | Finnrick | |
| 22 Apr 2025 | View | 6mg | ⚠️ Sample does not contain Retatrutide | n/a | RET7920231109-6 | White, Orange Label / Purple Crimp / Orange Cap | Lab D | Finnrick | |||
| 22 Apr 2025 | View | 6mg | ⚠️ Sample does not contain Retatrutide | n/a | RET7920231109-6 | White, Orange Label / Purple Crimp / Orange Cap | Lab D | Finnrick | |||
| 18 Apr 2025 | View | 6mg | 8.72mg | +45.3% | 99.09% | n/a | RET7920231109-6 | White Label / Purple Crimp / Orange Cap | Lab D | Finnrick | |
| 18 Apr 2025 | View | 6mg | 8.75mg | +45.8% | 99.05% | n/a | RET7920231109-6 | White Label / Purple Crimp / Orange Cap | Lab D | Finnrick | |
| 28 Mar 2025 | View | 16mg | 14.17mg | -11.4% | 99.61% | n/a | RET9920241120-16 | White, Orange Label / Blue Crimp / Turquoise Cap | Lab C | Finnrick | |
| 28 Mar 2025 | View | 12mg | 11.1mg | -7.5% | 99.70% | n/a | RET9920241222-12 | White, Orange Label / Black Crimp / Red Cap | Lab C | Finnrick | |
| 28 Mar 2025 | View | 12mg | 10.61mg | -11.6% | 99.63% | n/a | RET9920241222-12 | White, Orange Label / Black Crimp / Red Cap | Lab C | Finnrick | |
| 28 Mar 2025 | View | 6mg | ⚠️ Sample does not contain Retatrutide | n/a | RET7920231109-6 | White, Orange Label / Purple Crimp / Orange Cap | Lab C | Finnrick | |||
| 28 Mar 2025 | View | 6mg | ⚠️ Sample does not contain Retatrutide | n/a | RET7920231109-6 | White, Orange Label / Purple Crimp / Orange Cap | Lab C | Finnrick | |||
| 28 Mar 2025 | View | 16mg | 14.69mg | -8.2% | 99.55% | n/a | RET9920241120-16 | White, Orange Label / Blue Crimp / Turquoise Cap | Lab C | Finnrick | |
| 19 Feb 2025 | View | 6mg | ⚠️ Sample does not contain Retatrutide | n/a | RET7920231124-6 | White Label / Purple Crimp / Orange Cap | Lab B | Finnrick | |||
| 14 Feb 2025 | View | 6mg | ⚠️ Sample does not contain Retatrutide | n/a | RET7920231124-6 | White Label / Purple Crimp / Orange Cap | Lab A | Finnrick | |||
| 13 Feb 2025 | View | 6mg | ⚠️ Sample does not contain Retatrutide | n/a | RET7920231124-6 | White Label / Purple Crimp / Orange Cap | Lab C | Finnrick | |||
| 13 Feb 2025 | View | 6mg | ⚠️ Sample does not contain Retatrutide | n/a | RET7920231124-6 | White Label / Purple Crimp / Orange Cap | Lab C | Finnrick | |||
| 17 Dec 2024 | View | 6mg | 7.82mg | +30.3% | 99.48% | n/a | RET7920231124-6 | White Label / Purple Crimp / Orange Cap | Lab A | Finnrick | |
Corrections
- 17 Nov 2025
- 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
- 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.
- 29 Aug 2025
- Batch identifier for Peptide Sciences Retatrutide 6mg vial tested 30 June was missing. Test score changed from 6.3 to 8.3.
- 6 Apr 2025
- 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.