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Peptide testing

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

Test my supply
77%
Finnrick rating
#176 of 281 Tirzepatide vendors
3 of 4 classifiable tests passed
customers 4.6★ (9)
methodology · Purity focus
Finnrick analysis · Tirzepatide

A recent identity failure breaks an otherwise clean Tirzepatide record for MGC Peptides. Earlier lots had passing identity with 99.6–99.9% purity and fills within this method's tolerance, so the Jun 04, 2026 batch drives the concern.

methodology →
Peptides
#
Peptide
$/MG
Rating
N
1
GHK-Cu
-
87%
2
2
Tirzepatideselected
$0.25
77%
4
4
PT-141
-
-
0
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%1 Mar 2026: 79%29 Mar 2026: 80%23 Apr 2026: 81%23 Oct 2026: 77%12 Nov 2026: current 77%79%77%Mar 26Nov 26
Showing Tirzepatide tests only
MGC Peptides Tirzepatide test history
COA-backed lab tests

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 Tirzepatide from MGC Peptides? Mail in a sample (US only) and let us test it.

Test my supply