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Ordered peptides from Zhuoyan Peptides? Mail in a sample (US only) and let us test it.

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73%
Finnrick rating
#179 of 344 ranked vendors
2 of 4 classifiable tests passed
methodology · Purity focus
Finnrick analysis

Zhuoyan Peptides' Retatrutide evidence starts strong, with 99.7% purity and +1% fill, but then drops to an identity failure with 0% purity and 0 mg found. Because only Retatrutide is rated and the record is sparse, the vendor signal is volatile and heavily influenced by priors.

methodology →
vendor intelligence report
Vendor Intelligence Report: Zhuoyan Peptides

WHOIS records show a current storefront and an older associated domain under separate privacy-protected registrations, with no channel map tying them together. Corporate, review, and payment artifacts remain missing where buyer recourse would normally be tested.

16 pages4 risk factors assessed2 Jul 2026
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Peptides
#
Peptide
$/MG
Rating
N
1
Retatrutide
$1.17
73%
4
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%13 May 2026: 80%18 May 2026: 76%16 Jun 2026: 78%16 Jun 2026: 74%18 Sept 2026: current 73%80%73%May 26Sep 26
Zhuoyan Peptides test history
COA-backed lab tests
DateResultTestLabPurityDosageLabelCOA
16 Jun 2026
Fail
Retatrutide
lab nameView COA
16 Jun 2026
Pass
Retatrutide
lab nameView COA
18 May 2026
Fail
Retatrutide
lab nameView COA
13 May 2026
Pass
Retatrutide
lab nameView COA

About Zhuoyan Peptides test results from Finnrick

Zhuoyan Peptides is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 1 peptide and 4 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 Zhuoyan Peptides peptides in this dataset are Retatrutide (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 4 recent tests.

Corrections
No corrections.
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