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

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

Test my supply
+3 more ↓
79%
Finnrick rating
#126 of 262 Tirzepatide vendors
4 of 5 classifiable tests passed
customers 4.6★ (4)
methodology · Purity focus
Finnrick analysis · Tirzepatide

Zen Peptides Tirzepatide is held back by a severe quantity miss: one 10 mg vial tested at 4.13 mg (-59%) even with passing identity and 99.5% purity. Later batch-identified tests look cleaner, so the signal is improving but mixed.

methodology →
vendor intelligence report
Vendor Intelligence Report: Zen Peptides

We investigated who actually operates Zen Peptides — corporate records, ownership trails, web infrastructure, and how its lab results break down product by product. Read the full report before you order.

26 pages7 risk factors assessed13 Jun 2026
read the report
Peptides
#
Peptide
$/MG
Rating
N
1
GHK-Cu
$0.07
89%
4
2
Tirzepatideselected
$0.33
79%
5
3
Retatrutide
$1.00
72%
11
5
BPC-157
$0.88
51%
3
6
Tesamorelin
$2.50
44%
6
7
NAD+
$0.02
33%
3
8
HGH
-
-
0
9
MOTS-c
$0.88
-
0
10
Semax
$1.19
-
0
11
TB-500
$2.00
-
0
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%24 Oct 2025: 79%13 Dec 2025: 75%20 Feb 2026: 77%4 Mar 2026: 77%24 Sep 2026: 79%29 Sep 2026: current 79%79%77%79%Oct 25Sep 26
Showing Tirzepatide tests only
Zen Peptides Tirzepatide test history
COA-backed lab tests

About Zen Peptides test results from Finnrick

Zen Peptides is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 7 peptides and 35 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 Zen Peptides peptides in this dataset are BPC-157 (3 tests), GHK-Cu (4 tests) and Ipamorelin (3 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 35 recent tests.

Corrections
No corrections.
Free peptide testing

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

Test my supply