89%
Finnrick rating
#8 of 250 Retatrutide vendors
18 of 19 classifiable tests passed
natural 95% · customers 4.8★ (16)
methodology · Purity focus
Finnrick analysis · Retatrutide

One severe -40% underfill is the main drag on an otherwise low-concern Retatrutide lab profile. Later tests recovered with high purity and mostly modest fill variance, though some batch identifiers are missing.

methodology →
vendor intelligence report
Vendor Intelligence Report: Nantong Guangyuan Chemical GYC

A clone-site trail uses a near-match Telegram handle, fake verification badge, and backdated review wall to impersonate GYC. The report separates the real Nantong trading entity from fraud infrastructure across domains, DNS, forum posts, and channel history.

20 pages4 risk factors assessed12 Jun 2026
read the report
Peptides
#
Peptide
$/MG
Rating
N
1
Retatrutideselected
$0.68
89%
19
2
Tirzepatide
$0.35
88%
23
3
Cagrilintide
$7.20
66%
4
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%4 Nov 2025: 76%23 Nov 2025: 77%15 Jan 2026: 79%15 Jan 2026: 80%26 Jan 2026: 82%26 Jan 2026: 83%26 Jan 2026: 84%26 Jan 2026: 85%26 Jan 2026: 86%4 Feb 2026: 86%11 Feb 2026: 87%16 Feb 2026: 88%3 Mar 2026: 89%18 Mar 2026: 90%13 Jul 2026: 90%9 Aug 2026: current 89%76%87%89%Nov 25Aug 26
Showing Retatrutide tests only
Nantong Guangyuan Chemical GYC Retatrutide test history
COA-backed lab tests
DateResultTestLabPurityDosageLabelCOA
13 Jul 2026Pass
Tested
lab nameView COA
18 Mar 2026Pass
Tested
lab nameView COA
3 Mar 2026Pass
Tested
lab nameView COA
16 Feb 2026Pass
Tested
lab nameView COA
11 Feb 2026Pass
Tested
lab nameView COA
4 Feb 2026Pass
Tested
lab nameView COA
26 Jan 2026Pass
Tested
lab nameView COA
26 Jan 2026Pass
Tested
lab nameView COA
26 Jan 2026Pass
Tested
lab nameView COA
26 Jan 2026Pass
Tested
lab nameView COA
1-10 of 19

About Nantong Guangyuan Chemical GYC test results from Finnrick

Nantong Guangyuan Chemical GYC is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 3 peptides and 46 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 Nantong Guangyuan Chemical GYC peptides in this dataset are Retatrutide (19 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 46 recent tests.

Corrections
No corrections.