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

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

Test my supply
74%
Finnrick rating
#226 of 457 ranked vendors
3 of 6 classifiable tests passed
methodology · Purity focus
methodology →
Peptides
#
Peptide
$/MG
Rating
N
1
Tirzepatide
$4.43
76%
3
2
Retatrutide
$0.66
73%
5
3
GHK-Cu
$0.05
-
0
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%15 Apr 2026: 79%15 Apr 2026: 80%8 May 2026: 78%26 Jun 2026: 77%4 Aug 2026: 77%9 Aug 2026: 75%4 Oct 2026: current 74%79%77%74%Apr 26Oct 26
Changyuan Polypeptide test history
COA-backed lab tests
DateResultTestLabPurityDosageLabelCOA
9 Aug 2026
Fail
Retatrutide
lab nameView COA
4 Aug 2026
Pass
Retatrutide
lab nameView COA
26 Jun 2026
Incomplete
Tirzepatide
lab nameView COA
26 Jun 2026
Fail
Tirzepatide
lab nameView COA
11 May 2026
Incomplete
Retatrutide
lab nameView COA
8 May 2026
Fail
Retatrutide
lab nameView COA
15 Apr 2026
Pass
Retatrutide
lab nameView COA
15 Apr 2026
Pass
Tirzepatide
lab nameView COA

About Changyuan Polypeptide test results from Finnrick

Changyuan Polypeptide is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 2 peptides and 8 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 Changyuan Polypeptide peptides in this dataset are Retatrutide (5 tests), Tirzepatide (3 tests) and GHK-Cu (0 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 8 recent tests.

Corrections
No corrections.
Free peptide testing

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

Test my supply