PeptiSlim
Tirzepatide
Finnrick tested 15 samples of Tirzepatide (GLP-1 and GIP agonist) from PeptiSlim between 28 Aug 2025 and 4 Mar 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™
PeptiSlim
Tirzepatide
Tested 15 Samples
Last test 4 Mar 2026
Take Action
Researcher
Request Full Data Access to the Finnrick database of peptide tests.
Free peptide testing
Mail in a sample (US only) to get confidence for the specific vials you have, and contribute to identifying unsafe supply chains, so other people can avoid risky and costly mistakes.
Other Tirzepatide tests from top-rated vendors:
All Tirzepatide tests from PeptiSlim
Samples are tested in commercial labs
Tests Count
15
Scores
AVGMINMAX
Last
4 Mar 2026
First
28 Aug 2025
| Quantity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Certificate | Test Score | Label | Tested | Difference | Purity | Batch ID | Container | Tested At | Sent By |
| 4 Mar 2026 | View | 15mg | 15.7mg | +4.7% | 99.15% | PINK-0001 | White Label / Silver Crimp / Pink Cap | Lab E | Public | |
| 4 Mar 2026 | View | 30mg | 30.2mg | +0.7% | 99.85% | LGHTPINK-0001 | White Label / Silver Crimp / Pink Cap | Lab E | Public | |
| 26 Feb 2026 | View | 50mg | 54.2mg | +8.4% | 99.90% | October 20,2025 | No Label / Silver Crimp / Clear Yellow Cap | Lab E | Public | |
| 20 Feb 2026 | View | 10mg | 14mg | +40.0% | 99.88% | October 2 2025 | White Label / Silver Crimp / Yellow Cap | Lab E | Public | |
| 18 Feb 2026 | View | 60mg | 63.8mg | +6.3% | 99.63% | Oct 2, 2025 | No Label / Silver Crimp / Orange Cap | Lab E | Public | |
| 15 Jan 2026 | View | 20mg | 21.9mg | +9.5% | 99.80% | Mfg. Oct 19, 2025 | White Label / Silver Crimp / Violet Cap | Lab G | Public | |
| 15 Jan 2026 | View | 30mg | 34mg | +13.3% | 99.90% | Mfg. Nov 05, 2025 | White Label / Silver Crimp / Black Cap | Lab G | Public | |
| 15 Jan 2026 | View | 60mg | 51.7mg | -13.8% | 99.80% | Mfg. Oct 18, 2025 | White Label / Copper Crimp / Clear Cap | Lab G | Public | |
| 9 Jan 2026 | View | 60mg | 63.7mg | +6.2% | 99.95% | Oct 2, 2025 | No Label / Silver Crimp / Orange Cap | Lab E | Public | |
| 29 Dec 2025 | View | 30mg | 30mg | 99.95% | November 4,2025 | No Label / Silver Crimp / Black Cap | Lab E | Public | ||
| 23 Nov 2025 | View | 30mg | 33.06mg | +10.2% | 99.60% | PNK1/20 | Silver Label / Silver Crimp / Pink Cap | Lab A | Public | |
| 17 Nov 2025 | View | 30mg | ⚠️ Sample does not contain Tirzepatide | #1OF20 | Silver Label / Copper Crimp / Clear Cap | Lab E | Public | |||
| 29 Oct 2025 | View | 30mg | 26.5mg | -11.7% | 99.89% | Sep 15, 2025 | No Label / Silver Crimp / Pink Cap | Lab E | Public | |
| 3 Oct 2025 | View | 10mg | 10.5mg | +5.0% | 99.86% | July 7, 2025 | No Label / Silver Crimp / Clear Green Cap | Lab E | Public | |
| 28 Aug 2025 | View | 40mg | 38.9mg | -2.8% | 99.93% | May 16, 2026 | No Label / Silver Crimp / Green Cap | Lab E | Public | |