Nantong Guangyuan Chemical GYC
Finnrick has tested 46 samples from Nantong Guangyuan Chemical GYC across 3 products.
Fraud: Based on community reports, we have identified ggpeps.net as a fraudulent web site aggressively operating in the name of this vendor. It is most likely entirely unaffiliated with the original company, the fraud is putting the public at risk, so we are temporarily putting all tests under review.
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Products
| Tests | ||||||||
|---|---|---|---|---|---|---|---|---|
| Product | Rating | Count | Avg | Min | Max | Oldest | Most Recent | |
| Cagrilintide | 4 | 14 Nov 2025 | 17 Jul 2026 | |||||
| Retatrutide | 19 | 5 Oct 2025 | 13 Jul 2026 | |||||
| Tirzepatide | 23 | 3 Oct 2025 | 25 Mar 2026 | |||||
The Nantong Guangyuan Chemical GYC samples tested by Finnrick were either acquired by Finnrick directly, or submitted by the public.
Most recent Nantong Guangyuan Chemical GYC tests
Samples are tested in commercial labs
tests
products
Scores
First
Last
| Quantity | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Date | Product | Certificate | Test Score | Label | Batch | Tested | Difference | Purity | Endotoxins | Batch ID | Container | Tested At | Sent By |
| 17 Jul 2026 | Cagrilintide | View | 10mg | (no batch claim) | 11.8mg | +18.0% | 99.90% | n/a | 2026031310 | No label / Silver crimp / Green cap | Lab E | Public | |
| 13 Jul 2026 | Retatrutide | View | 60mg | (no batch claim) | 57.2mg | -4.7% | 99.90% | below LOQ | 2026031260 | White Label / Silver Crimp / White Cap | Lab E | Public | |
| 25 Mar 2026⚠️ | Tirzepatide | View | 60mg | 66.5mg | 64.6mg | -2.8% | 99.90% | n/a | G2025011060 Black Cap | No Label / Silver Crimp / Black Cap | Lab G | Public | |
| 18 Mar 2026⚠️ | Retatrutide | View | 50mg | 56.0mg | 46.7mg | -16.6% | 99.90% | n/a | 2025091250 | No Label / Green Crimp / Clear Cap | Lab E | Public | |
| 3 Mar 2026⚠️ | Retatrutide | View | 10mg | (no batch claim) | 11.1mg | +11.0% | 99.90% | n/a | (no batch ID) | No Label / Silver Crimp / Green Cap | Lab E | Public | |
| 3 Mar 2026⚠️ | Tirzepatide | View | 10mg | (no batch claim) | 10.9mg | +9.0% | 99.60% | n/a | (no batch ID) | No Label / Silver Crimp / White Cap | Lab E | Public | |
| 1 Mar 2026⚠️ | Tirzepatide | View | 30mg | (no batch claim) | 29.1mg | -3.0% | 99.80% | n/a | 2025121030 | No Label / Silver Crimp / Red Cap | Lab G | Public | |
Corrections
- 7 Aug 2026: Cagrilintide
- The sample was submitted to the laboratory with a label indicating a potency of **5.0 mg**. However, the original label and the client information provided at the time of the request confirmed the correct potency as **5.6 mg**. A new Certificate of Analysis (COA) has been issued to reflect the correct potency of **5.6 mg**.
- 26 Mar 2026: Tirzepatide
- Following community reports, we have identified clear signals of large-scale fraud in the name of Nantong Guangyuan Chemical GYC and are retracting all of their tests. The presence on the site ggpeps.net of an obviously fraudulent copy of the Finnrick web site (PeptideMeter.com) shows intent to deceive. Community reports include products not shipped after payment is taken. Finnrick strongly advises against purchasing from this vendor.
- 26 Mar 2026: Retatrutide
- Following community reports, we have identified clear signals of large-scale fraud in the name of Nantong Guangyuan Chemical GYC and are retracting all of their tests. The presence on the site ggpeps.net of an obviously fraudulent copy of the Finnrick web site (PeptideMeter.com) shows intent to deceive. Community reports include products not shipped after payment is taken. Finnrick strongly advises against purchasing from this vendor.
About Nantong Guangyuan Chemical GYC Test Results From Finnrick
Nantong Guangyuan Chemical GYC is a peptide vendor with multiple products tracked in the independent testing dataset collected by Finnrick. This page compiles recent, batch-level test results across 3 products and 46 tests, including scores, test dates, batch IDs, and lab details. This enables you to compare quality over time, not just marketing claims.
Each tested sample receives a 0–10 score, with 10 being the best possible value. It is the total of three components: purity (0–4 points), quantity accuracy vs. the label or batch claim (0–4 points), and batch information quality (0–2 points).
When several test results are available for a product and vendor pair, you’ll also find a Finnrick Rating (A–E, where A is best and E is worst, X if an insufficient number of tests is available, or F in rare cases of documented and widespread fraud). Use the table above to review purity, quantity accuracy, consistency between batches, and any notable outliers surfaced in Finnrick testing data.
Nantong Guangyuan Chemical GYC Testing Activity & Score Summary
In the past 30 days, Finnrick has published no new test results for Nantong Guangyuan Chemical GYC, and 2 in the past three months. The overall dataset includes 46 tested samples with an average score of 7.6/10 across all products.
Across 46 identity-tested samples, 100% were confirmed to contain the expected peptide (identity pass rate). Among those that passed, median purity was 99.9%. Approximately 100% of passing samples tested at or above 98% purity.
Here is a closer look at the most frequently tested products (top 3):
- Retatrutide (19 tests, 100% identity pass, median purity 99.9%) — Test scores are highly variable, ranging from 6.2 to 10.0 (average 8.1/10), suggesting significant batch-to-batch differences.
- Tirzepatide (23 tests, 100% identity pass, median purity 99.9%) — Test scores are highly variable, ranging from 5.2 to 9.9 (average 7.4/10), suggesting significant batch-to-batch differences.
- Cagrilintide (4 tests, 100% identity pass, median purity 99.8%) — Test scores are highly variable, ranging from 5.9 to 8.1 (average 6.9/10), suggesting significant batch-to-batch differences.