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

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74%
Finnrick rating
#287 of 378 Retatrutide vendors
3 of 5 classifiable tests passed
natural 60% · customers 4.4★ (8)
methodology · Purity focus
Finnrick analysis · Retatrutide

Cocer Peptides' Retatrutide signal is volatile: the most recent lab test failed identity at 0% purity/0 mg after an earlier +139% fill result. Clean Feb/Mar passes keep the picture mixed, so inspect the sequence.

methodology →
vendor intelligence report
Vendor Intelligence Report: Cocer Peptides

WHOIS and domain evidence test Cocer’s experience claims while mapping a fragmented brand surface, including a confirmed .top impersonation and a shifting .net storefront. The report also traces self-submitted COAs, fake-tracking complaints, and weak recourse rails.

20 pages8 risk factors assessed2 Jul 2026
read the report
Peptides
#
Peptide
$/MG
Rating
N
1
Retatrutideselected
$1.70
74%
5
2
Tesamorelin
$1.60
47%
4
3
TB-500
$1.00
36%
3
4
BPC-157
$0.75
-
0
5
GHK-Cu
$0.11
-
0
6
GLOW
-
-
0
7
Ipamorelin
$1.00
-
0
8
Tirzepatide
$1.80
-
0
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%21 Oct 2025: 76%15 Jan 2026: 73%4 Feb 2026: 75%12 Mar 2026: 77%16 Jun 2026: 74%29 Sep 2026: current 74%76%77%74%Oct 25Sep 26
Showing Retatrutide tests only
Cocer Peptides Retatrutide test history
COA-backed lab tests

About Cocer Peptides test results from Finnrick

Cocer Peptides is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 3 peptides and 12 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 Cocer Peptides peptides in this dataset are Retatrutide (5 tests), TB-500 (3 tests) and Tesamorelin (4 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 12 recent tests.

Corrections
No corrections.
Free peptide testing

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

Test my supply