NEW SITE — FASTER TURNAROUND, MORE LABS. READ ON
Free peptide testing

Ordered peptides from PolyPeptide? Mail in a sample (US only) and let us test it.

Test my supply
74%
Finnrick rating
#237 of 489 ranked vendors
0 of 1 classifiable tests passed
methodology · Purity focus
methodology →
Peptides
#
Peptide
$/MG
Rating
N
3
GHK-Cu
-
-
0
Contact channels
PolyPeptide test history
COA-backed lab tests
DateResultTestLabPurityDosageLabelCOA
13 Dec 2025
Fail
Retatrutide
lab nameView COA

About PolyPeptide test results from Finnrick

PolyPeptide is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 1 peptide and 1 test, 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 PolyPeptide peptides in this dataset are Retatrutide (1 test), BPC-157 (0 tests) and GHK-Cu (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 1 recent test.

Corrections
No corrections.
Free peptide testing

Ordered peptides from PolyPeptide? Mail in a sample (US only) and let us test it.

Test my supply