Finnrick - Ensuring a Safer and More Transparent Supply Chain

Free peptides test: now with paid endotoxins contamination option

Zen Peptides

Zen Peptides

Retatrutide

Finnrick tested 6 samples of Retatrutide (GLP-1, GIP, and GCGR agonist) from Zen Peptides between 23 Oct 2025 and 7 Jan 2026. Test scores average over 5, no score below 4, and at least 6 tests warrant a confident Finnrick Rating of C (Okay).

Finnrick Rating™
Zen Peptides
Retatrutide
Tested 6 Samples
Last test 7 Jan 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.

All Retatrutide tests from Zen Peptides

Samples are tested in commercial labs

Tests Count

6

Scores

AVG6.3MIN4.2MAX7.8

Last

7 Jan 2026

First

23 Oct 2025
Quantity
Test DateCertificate
Test Score
LabelTestedDifferencePurityBatch IDContainerTested AtSent By
7 Jan 2026View7.810mg9.8mg-2.0%99.80%(no batch ID)No Label / Silver Crimp / Green CapLab GPublic
1 Jan 2026View4.715mg17.5mg+16.7%99.60%(no batch ID)No Label / Silver Crimp / Clear CapLab GPublic
10 Dec 2025View4.210mg8.65mg-13.5%99.20%(no batch ID)No Label / Silver Crimp / Green CapLab GPublic
17 Nov 2025View7.810mg9.56mg-4.4%99.81%(no batch ID)White Label / Silver Crimp / Clear Blue CapLab EPublic
17 Nov 2025View5.95mg5.14mg+2.8%98.93%(no batch ID)No Label / Silver Crimp / Yellow CapLab EPublic
23 Oct 2025View7.510mg10.6mg+6.0%98.83%August 2, 2025No Label / Silver Crimp / Green Cap Lab EPublic