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

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+3 more ↓
84%
Finnrick rating
#41 of 378 Retatrutide vendors
10 of 11 classifiable tests passed
natural 91% · customers 4.7★ (9)
methodology · Purity focus
Finnrick analysis · Retatrutide

Zhuoyue's Retatrutide rating is held back mainly by one stark 88.42% purity miss, followed by a steadier run of identity/purity/fill passes. Check the later 99.6% purity results, -21% fill result, and mostly absent batch identifiers.

methodology →
vendor intelligence report
Vendor Intelligence Report: Zhuoyue Biotechnology

A website-disclosed Wyoming LLC, privacy-masked domain records, and a China-side registry signal do not resolve to a clear operating laboratory. The report also maps a shared WhatsApp trail into unrelated gray-market selling and self-issued COAs with unsupported regulatory language.

22 pages6 risk factors assessed3 Jul 2026
read the report
Peptides
#
Peptide
$/MG
Rating
N
1
GHK-Cu
$0.11
90%
5
2
Retatrutideselected
$1.20
84%
12
3
Tirzepatide
$0.55
65%
16
4
TB-500
$1.80
32%
3
6
KLOW
-
-
0
7
MOTS-c
-
-
0
8
NAD+
-
-
0
9
Semaglutide
$0.66
-
0
10
SS-31
-
-
0
11
Tesamorelin
$2.45
-
0
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%21 Aug 2025: 68%19 Jan 2026: 73%19 Jan 2026: 74%11 Feb 2026: 77%20 Feb 2026: 78%6 Mar 2026: 79%7 Mar 2026: 80%30 Apr 2026: 82%25 May 2026: 83%16 Jun 2026: 84%12 Aug 2026: 84%29 Sep 2026: current 84%68%73%84%Aug 25Sep 26
Showing Retatrutide tests only
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Ordered Retatrutide from Zhuoyue Biotechnology? Mail in a sample (US only) and let us test it for free.

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Zhuoyue Biotechnology Retatrutide test history
COA-backed lab tests
1-10 of 12

About Zhuoyue Biotechnology test results from Finnrick

Zhuoyue Biotechnology is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 4 peptides and 36 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 Zhuoyue Biotechnology peptides in this dataset are GHK-Cu (5 tests), Retatrutide (12 tests) and TB-500 (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 36 recent tests. It also includes 1 correction related to this vendor.

Corrections
2026-09-02
Finnrick data entry
GHK-Cu (Zhuoyue Biotechnology): stated amount corrected from 100 mg to 50 mg.
Free peptide testing

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

Test my supply