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

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+6 more ↓
89%
Finnrick rating
#9 of 407 Retatrutide vendors
104 of 116 classifiable tests passed
customers 4.6★ (74)
methodology · Purity focus
Finnrick analysis · Retatrutide

ZLZ Peptide Retatrutide is high-scoring but not clean, with intermittent purity misses, major fill outliers (+66%, -66%), and one failed-identity/0 mg result. Recent tests returned to passing; batch IDs remain uneven.

methodology →
vendor intelligence report
Vendor Intelligence Report: ZLZ Peptide

Corporate and B2B records trace ZLZ’s storefront to a Hunan chemical-intermediate operator with BMK/PMK precursor listings. The report also maps altered-COA allegations, alias-led sales channels, irreversible payment rails, and lookalike-domain risk.

30 pages7 risk factors assessed3 Jul 2026
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Peptides
#
Peptide
$/MG
Rating
N
1
Retatrutideselected
$0.81
89%
117
2
Tirzepatide
$0.43
85%
97
3
GHK-Cu
$0.07
85%
19
5
PT-141
$0.62
72%
3
6
Semaglutide
$0.49
69%
13
7
Melanotan II
$0.54
66%
2
9
Sermorelin
$1.52
55%
5
10
BPC-157
$0.68
49%
13
11
Tesamorelin
$2.00
43%
18
12
CJC-1295
-
43%
5
13
TB-500
$1.76
38%
6
14
NAD+
$0.02
18%
5
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%20 Jun 2025: 62%30 Jun 2025: 65%30 Jun 2025: 67%17 Jul 2025: 69%24 Jul 2025: 71%25 Jul 2025: 74%3 Aug 2025: 76%4 Aug 2025: 77%11 Aug 2025: 80%11 Aug 2025: 82%11 Aug 2025: 83%12 Aug 2025: 79%21 Aug 2025: 81%1 Sep 2025: 83%4 Sep 2025: 84%8 Sep 2025: 85%10 Sep 2025: 86%30 Sep 2025: 88%30 Sep 2025: 88%30 Sep 2025: 85%30 Sep 2025: 86%30 Sep 2025: 86%3 Oct 2025: 87%5 Oct 2025: 88%5 Oct 2025: 88%5 Oct 2025: 89%5 Oct 2025: 89%5 Oct 2025: 90%5 Oct 2025: 90%9 Oct 2025: 90%9 Oct 2025: 91%9 Oct 2025: 91%13 Oct 2025: 91%13 Oct 2025: 92%13 Oct 2025: 89%13 Oct 2025: 90%21 Oct 2025: 90%21 Oct 2025: 90%23 Oct 2025: 90%23 Oct 2025: 88%23 Oct 2025: 89%24 Oct 2025: 89%24 Oct 2025: 89%30 Oct 2025: 89%4 Nov 2025: 90%4 Nov 2025: 90%4 Nov 2025: 90%6 Nov 2025: 90%14 Nov 2025: 91%23 Nov 2025: 89%5 Dec 2025: 87%16 Dec 2025: 87%29 Dec 2025: 88%7 Jan 2026: 88%7 Jan 2026: 88%7 Jan 2026: 88%7 Jan 2026: 89%7 Jan 2026: 89%15 Jan 2026: 89%15 Jan 2026: 89%19 Jan 2026: 89%19 Jan 2026: 90%26 Jan 2026: 90%29 Jan 2026: 90%29 Jan 2026: 88%4 Feb 2026: 89%9 Feb 2026: 89%9 Feb 2026: 89%13 Feb 2026: 89%15 Feb 2026: 89%20 Feb 2026: 90%20 Feb 2026: 90%22 Feb 2026: 90%22 Feb 2026: 90%22 Feb 2026: 90%22 Feb 2026: 90%26 Feb 2026: 90%3 Mar 2026: 91%3 Mar 2026: 91%4 Mar 2026: 91%6 Mar 2026: 91%6 Mar 2026: 91%10 Mar 2026: 91%17 Mar 2026: 91%19 Mar 2026: 90%25 Mar 2026: 90%29 Mar 2026: 90%23 Apr 2026: 91%28 Apr 2026: 91%28 Apr 2026: 91%6 May 2026: 91%8 May 2026: 90%13 May 2026: 90%15 Jun 2026: 90%24 Jun 2026: 90%24 Jun 2026: 90%26 Jun 2026: 90%10 Jul 2026: 91%13 Jul 2026: 91%5 Aug 2026: 91%5 Aug 2026: 91%12 Aug 2026: 91%13 Aug 2026: 91%25 Aug 2026: 91%4 Sep 2026: 91%8 Sep 2026: 91%23 Sep 2026: 91%24 Sep 2026: 92%30 Sep 2026: 92%30 Sep 2026: 92%5 Oct 2026: 91%5 Oct 2026: 90%5 Oct 2026: 90%6 Oct 2026: 90%8 Oct 2026: 90%12 Oct 2026: 89%23 Oct 2026: current 89%62%87%89%Jun 25Oct 26
Showing Retatrutide tests only
Free peptide testing

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

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ZLZ Peptide Retatrutide test history
COA-backed lab tests
1-10 of 117

About ZLZ Peptide test results from Finnrick

ZLZ Peptide is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 14 peptides and 312 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 ZLZ Peptide peptides in this dataset are CJC-1295 (5 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 200 recent tests.

Corrections
No corrections.
Free peptide testing

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

Test my supply