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Peptide testing

Ordered GHK-Cu from MGC Peptides? Mail in a sample (US only) and let us test it.

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87%
Finnrick rating
#68 of 156 GHK-Cu vendors
2 of 2 classifiable tests passed
natural 100% · customers 4.6★ (3)
methodology · Purity focus
Finnrick analysis · GHK-Cu

MGC Peptides GHK-Cu has a thin but clean purity-focused record, with identity passes and 99.6–99.7% purity across tested batches. The main caveat is fill volatility, from +25% over to -15% under, plus no price corroboration.

methodology →
Peptides
#
Peptide
$/MG
Rating
N
1
GHK-Cuselected
-
87%
2
2
Tirzepatide
$0.25
77%
4
4
PT-141
-
-
0
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%1 Mar 2026: 89%20 Oct 2026: 87%12 Nov 2026: current 87%89%87%Mar 26Nov 26
Showing GHK-Cu tests only
MGC Peptides GHK-Cu test history
COA-backed lab tests
DateResultTestLabPurityDosageLabelCOA
20 Oct 2026Pass
Tested
lab nameView COA
1 Mar 2026Pass
Tested
lab nameView COA

About MGC Peptides test results from Finnrick

MGC 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 MGC Peptides peptides in this dataset are GHK-Cu (2 tests), Tirzepatide (4 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.
Peptide testing

Ordered GHK-Cu from MGC Peptides? Mail in a sample (US only) and let us test it.

Test my supply