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

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78%
Finnrick rating
#184 of 378 Retatrutide vendors
4 of 5 classifiable tests passed
customers 4.3★ (5)
methodology · Purity focus
Finnrick analysis · Retatrutide

Maddox Research Retatrutide has a mixed record, including a severe May failure with failed identity, 0% purity, and 0 mg recovered from a 10 mg vial. June results recovered, but one 20 mg vial tested at 15.5 mg with no batch ID.

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vendor intelligence report
Vendor Intelligence Report: Maddox Research

Corporate records tie Maddox to a Virginia LLC with a residential-address signal, while a personal payment handle points toward an operator the public site does not name. The report also maps shared web infrastructure, broken legal pages, and promotion-scan gaps.

19 pages8 risk factors assessed2 Jul 2026
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Peptides
#
Peptide
$/MG
Rating
N
1
Retatrutideselected
$0.95
78%
5
2
GHK-Cu
$0.06
-
0
5
Tirzepatide
$0.57
-
0
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%19 Mar 2026: 80%6 May 2026: 76%1 Jun 2026: 78%6 Jun 2026: 79%1 Jul 2026: 79%29 Sep 2026: current 78%80%78%78%Mar 26Sep 26
Showing Retatrutide tests only
Maddox Research Retatrutide test history
COA-backed lab tests

About Maddox Research test results from Finnrick

Maddox Research is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 1 peptide and 5 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 Maddox Research peptides in this dataset are Retatrutide (5 tests), GHK-Cu (0 tests) and Tirzepatide (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 5 recent tests.

Corrections
No corrections.
Free peptide testing

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

Test my supply