LN Peptides Safety Rating & Test Results

As of 2 Aug 2026, Finnrick has published 37 independent lab tests of 5 peptides from LN Peptides: 27 passed and 10 failed under the default public standard, Purity Focus (HPLC purity at least 99.5%, fill within ±35% of the label claim). The latest test is dated 22 Jul 2026.

Finnrick ratings are recency-weighted pass percentages: newer tests count more, and vendors with thin test histories are pulled toward the peer baseline for that peptide, so a single result cannot look too certain. Samples are analyzed by independent partner laboratories and the results are published by Finnrick Analytics, which does not sell peptides and does not accept payment to alter ratings. Corrections to published data are recorded at finnrick.com/corrections.

Purchased from LN Peptides? Submit a sample to Finnrick for free independent lab testing — results are published publicly.

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LN Peptides peptides tested by Finnrick, rated under the default public methodology.
PeptideFinnrick ratingLab testsLatest test
Ipamorelin73%226 Jan 2026
Mazdutide68%19 Oct 2025
Retatrutide79%1122 Jul 2026
Tesamorelin41%915 Jun 2026
Tirzepatide82%1428 Apr 2026