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Ordered Retatrutide from Checkmate Peptides? Mail in a sample (US only) and let us test it for free.

Test my supply
76%
Finnrick rating
#235 of 378 Retatrutide vendors
2 of 3 classifiable tests passed
natural 67% · customers 4.6★ (2)
methodology · Purity focus
methodology →
Peptides
#
Peptide
$/MG
Rating
N
2
Retatrutideselected
-
76%
3
4
GHK-Cu
-
-
0
7
TB-500
-
-
0
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%13 May 2026: 80%24 Jun 2026: 81%1 Jul 2026: 77%29 Sept 2026: current 76%80%77%76%May 26Sep 26
Showing Retatrutide tests only
Checkmate Peptides Retatrutide test history
COA-backed lab tests

About Checkmate Peptides test results from Finnrick

Checkmate Peptides is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 2 peptides and 6 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 Checkmate Peptides peptides in this dataset are Retatrutide (3 tests), Tirzepatide (3 tests) and BPC-157 (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 6 recent tests.

Corrections
No corrections.
Free peptide testing

Ordered Retatrutide from Checkmate Peptides? Mail in a sample (US only) and let us test it for free.

Test my supply