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Peptide testing

Ordered Retatrutide from RT Peptide? Mail in a sample (US only) and let us test it.

Test my supply
76%
Finnrick rating
#229 of 417 Retatrutide vendors
3 of 4 classifiable tests passed
customers 4.6★ (14)
methodology · Purity focus
Finnrick analysis · Retatrutide

A September identity failure is the key drag, interrupting otherwise high-purity Retatrutide results. The October retest recovered with 99.99% purity and +12% fill, so the current signal is mixed rather than steadily clean.

methodology →
Peptides
#
Peptide
$/MG
Rating
N
1
Retatrutideselected
$0.74
76%
4
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%5 May 2026: 80%26 Aug 2026: 80%15 Sep 2026: 76%14 Oct 2026: 77%12 Nov 2026: current 76%80%80%76%May 26Nov 26
Showing Retatrutide tests only
RT Peptide Retatrutide test history
COA-backed lab tests

About RT Peptide test results from Finnrick

RT Peptide is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 1 peptide and 4 tests, including ratings, observed price signals, recent test dates, and correction history where available.

Finnrick ratings are calculated from published sample data using the selected rating standard. The default standard evaluates purity, dose accuracy, and label quality, then adjusts low-volume results so small sample counts do not appear more certain than the data supports.

The most visible RT Peptide peptides in this dataset are Semaglutide (0 tests). Use the peptide table above to compare the current Finnrick rating, price per mg, and sample volume for each peptide.

Recent tests and corrections are shown below when available. Samples may be acquired by Finnrick directly or submitted through Finnrick testing programs; the goal is to make safety and supply-chain evidence easier to evaluate than vendor marketing claims alone. This page currently lists 4 recent tests.

Corrections
No corrections.
Peptide testing

Ordered Retatrutide from RT Peptide? Mail in a sample (US only) and let us test it.

Test my supply