Nantong Guangyuan Chemical GYC reviews
46 independent lab tests across 3 products · 99.8% average purity
- 46 HPLC samples across 3 products
- Catalog avg purity 99.8%
- discord.gg/38vBSt3r6p
- Independent testing, no pay-to-rank
Boren Health independently tests products and verifies reviews. Public methodology, no pay-to-rank.
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What the testing shows
Across 46 measured samples from Nantong Guangyuan Chemical GYC, 8 came in more than 5% under the quantity on the label (17%). Another 21 measured more than 5% over. Purity across 46 readings ran from 98.78% to 100%, median 99.9%. Samples span Oct 2025 to Jul 2026.
- Under label
- 8/46
- Median purity
- 99.9%
- Latest sample
- Jul 2026
more than 5% short
98.78%–100% range
first tested Oct 2025
Lab testing results
Independent results across 3 products.
Tested products
| Product | Grade | Tests | Avg | Range | Latest | Price | $/mg |
|---|---|---|---|---|---|---|---|
| Retatrutide | AGREAT | 19 | 94.7% | 99.7% – 99.9% | 7/13/2026 | — | — |
| Tirzepatide | AGREAT | 23 | 91.3% | 98.8% – 100.0% | 3/25/2026 | — | — |
| Cagrilintide | COKAY | 4 | 75.0% | 99.6% – 99.9% | 7/17/2026 | — | — |
Individual lab tests
Date
7/17/2026
Purity
99.9%
Quantity
10 mg → 11.8 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Green cap
Date
7/13/2026
Purity
99.9%
Quantity
60 mg → 57.2 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / White Cap
Date
3/25/2026
Purity
99.9%
Quantity
60 mg → 64.6 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Black Cap
Date
3/18/2026
Purity
99.9%
Quantity
50 mg → 46.7 mg
Lab
Krause Analytical
Vial
No Label / Green Crimp / Clear Cap
Date
3/3/2026
Purity
99.6%
Quantity
10 mg → 10.9 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / White Cap
Date
3/3/2026
Purity
99.9%
Quantity
10 mg → 11.1 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Green Cap
Date
3/1/2026
Purity
99.8%
Quantity
30 mg → 29.1 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Red Cap
Date
2/26/2026
Purity
99.02%
Quantity
30 mg → 31 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Orange Cap
Date
2/16/2026
Purity
99.9%
Quantity
10 mg → 10 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / White Cap
Date
2/11/2026
Purity
99.88%
Quantity
60 mg → 66 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Clear Blue Cap
Date
2/4/2026
Purity
99.8%
Quantity
50 mg → 51.2 mg
Lab
BTLabs
Vial
No Label / Green Crimp / Clear Cap
Date
1/26/2026
Purity
99.7%
Quantity
15 mg → 15.2 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Yellow Cap
Date
1/26/2026
Purity
99.8%
Quantity
10 mg → 10.7 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Clear Blue Cap
Date
1/26/2026
Purity
99.9%
Quantity
20 mg → 20.3 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Blue Cap
Date
1/26/2026
Purity
99.8%
Quantity
10 mg → 11.3 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Clear Blue Cap
Date
1/26/2026
Purity
99.8%
Quantity
20 mg → 22.9 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Black Cap
Date
1/26/2026
Purity
99.9%
Quantity
15 mg → 15.5 mg
Lab
Krause Analytical
Vial
No Label / Red Crimp / Clear Cap
Date
1/26/2026
Purity
99.7%
Quantity
10 mg → 9.9 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / White Cap
Date
1/15/2026
Purity
99.9%
Quantity
20 mg → 21.7 mg
Lab
BTLabs
Vial
White Label / Silver Crimp / Blue Cap
Date
1/15/2026
Purity
99.8%
Quantity
30 mg → 30.4 mg
Lab
BTLabs
Vial
White Label / Silver Crimp / Violet Cap
Date
1/9/2026
Purity
99.95%
Quantity
40 mg → 37.9 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Clear Blue Cap
Date
1/7/2026
Purity
99.7%
Quantity
10 mg → 9.9 mg
Lab
BTLabs
Vial
White Label / Silver Crimp / Green Cap
Date
1/7/2026
Purity
99.9%
Quantity
50 mg → 57 mg
Lab
BTLabs
Vial
White Label / Blue Crimp / Clear Cap
Date
12/2/2025
Purity
99.6%
Quantity
5 mg → 6.7 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Violet Cap
Date
11/25/2025
Purity
98.78%
Quantity
40 mg → 41.1 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Clear Blue Cap
Date
11/23/2025
Purity
99.9%
Quantity
30 mg → 33 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Violet Cap
Date
11/23/2025
Purity
99.9%
Quantity
50 mg → 43.7 mg
Lab
BTLabs
Vial
No Label / Blue Crimp / Clear Cap
Date
11/23/2025
Purity
99.869%
Quantity
40 mg → 40.44 mg
Lab
Chromate
Vial
No Label / Silver Crimp / Clear Blue Cap
Date
11/22/2025
Purity
99.7%
Quantity
5 mg → 7.17 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Violet Cap
Date
11/14/2025
Purity
99.9%
Quantity
10 mg → 13.12 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Green Cap
Date
11/4/2025
Purity
99.95%
Quantity
50 mg → 42.3 mg
Lab
Krause Analytical
Vial
No Label / Blue Crimp / Clear Cap
Date
11/4/2025
Purity
99.87%
Quantity
50 mg → 46.7 mg
Lab
Krause Analytical
Vial
White Label / Green Crimp / Clear Cap
Date
11/3/2025
Purity
99.9%
Quantity
50 mg → 30.19 mg
Lab
BTLabs
Vial
No Label / Green Crimp / Clear Cap
Date
10/30/2025
Purity
99.8%
Quantity
15 mg → 15.8 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Black Cap
Date
10/30/2025
Purity
99.7%
Quantity
60 mg → 64.49 mg
Lab
BTLabs
Vial
White Label / Silver Crimp / Black Cap
Date
10/29/2025
Purity
99.95%
Quantity
15 mg → 14.6 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Black Cap
Date
10/24/2025
Purity
99.9%
Quantity
30 mg → 35.51 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Orange Cap
Date
10/24/2025
Purity
99.9%
Quantity
30 mg → 35.57 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / Orange Cap
Date
10/23/2025
Purity
99.95%
Quantity
30 mg → 25.8 mg
Lab
Krause Analytical
Vial
Silver Label / Silver Crimp / Orange Cap
Date
10/23/2025
Purity
99.95%
Quantity
20 mg → 20.1 mg
Lab
Krause Analytical
Vial
No Label / Copper Crimp / Clear Cap
Date
10/22/2025
Purity
99.862%
Quantity
40 mg → 44.31 mg
Lab
Chromate
Vial
White Label / Silver Crimp / Clear Blue Cap
Date
10/22/2025
Purity
99.998%
Quantity
30 mg → 35.71 mg
Lab
Chromate
Vial
White Label / Silver Crimp / Orange Cap
Date
10/5/2025
Purity
99.77%
Quantity
50 mg → 46.9 mg
Lab
Krause Analytical
Vial
White Label / Green Crimp / Clear Cap
Date
10/3/2025
Purity
99.74%
Quantity
20 mg → 19.8 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / Clear Green Cap
Date
10/3/2025
Purity
99.92%
Quantity
30 mg → 33.3 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Orange Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| CagrilintideNo label / Silver crimp / Green cap | 7/17/2026 | 10.0 | 99.9% | 10 mg → 11.8 mg | Krause Analytical | View |
| RetatrutideWhite Label / Silver Crimp / White Cap | 7/13/2026 | 10.0 | 99.9% | 60 mg → 57.2 mg | Krause Analytical | View |
| TirzepatideNo Label / Silver Crimp / Black Cap | 3/25/2026 | 10.0 | 99.9% | 60 mg → 64.6 mg | BTLabs | View |
| RetatrutideNo Label / Green Crimp / Clear Cap | 3/18/2026 | 10.0 | 99.9% | 50 mg → 46.7 mg | Krause Analytical | View |
| TirzepatideNo Label / Silver Crimp / White Cap | 3/3/2026 | 10.0 | 99.6% | 10 mg → 10.9 mg | Krause Analytical | View |
| RetatrutideNo Label / Silver Crimp / Green Cap | 3/3/2026 | 10.0 | 99.9% | 10 mg → 11.1 mg | Krause Analytical | View |
| TirzepatideNo Label / Silver Crimp / Red Cap | 3/1/2026 | 10.0 | 99.8% | 30 mg → 29.1 mg | BTLabs | View |
| TirzepatideNo Label / Silver Crimp / Orange Cap | 2/26/2026 | 9.9 | 99.02% | 30 mg → 31 mg | Krause Analytical | View |
| RetatrutideWhite Label / Silver Crimp / White Cap | 2/16/2026 | 10.0 | 99.9% | 10 mg → 10 mg | Krause Analytical | View |
| RetatrutideNo Label / Silver Crimp / Clear Blue Cap | 2/11/2026 | 10.0 | 99.88% | 60 mg → 66 mg | Krause Analytical | View |
| Tirzepatide | 2/10/2026 | 10.0 | 99.9% | 60 mg → 60.1 mg | BTLabs | View |
| RetatrutideNo Label / Green Crimp / Clear Cap | 2/4/2026 | 10.0 | 99.8% | 50 mg → 51.2 mg | BTLabs | View |
| RetatrutideNo Label / Silver Crimp / Yellow Cap | 1/26/2026 | 10.0 | 99.7% | 15 mg → 15.2 mg | Krause Analytical | View |
| RetatrutideNo Label / Silver Crimp / Clear Blue Cap | 1/26/2026 | 10.0 | 99.8% | 10 mg → 10.7 mg | BTLabs | View |
| RetatrutideNo Label / Silver Crimp / Blue Cap | 1/26/2026 | 10.0 | 99.9% | 20 mg → 20.3 mg | Krause Analytical | View |
| TirzepatideNo Label / Silver Crimp / Clear Blue Cap | 1/26/2026 | 10.0 | 99.8% | 10 mg → 11.3 mg | BTLabs | View |
| TirzepatideNo Label / Silver Crimp / Black Cap | 1/26/2026 | 10.0 | 99.8% | 20 mg → 22.9 mg | BTLabs | View |
| RetatrutideNo Label / Red Crimp / Clear Cap | 1/26/2026 | 10.0 | 99.9% | 15 mg → 15.5 mg | Krause Analytical | View |
| RetatrutideNo Label / Silver Crimp / White Cap | 1/26/2026 | 10.0 | 99.7% | 10 mg → 9.9 mg | BTLabs | View |
| RetatrutideWhite Label / Silver Crimp / Blue Cap | 1/15/2026 | 10.0 | 99.9% | 20 mg → 21.7 mg | BTLabs | View |
| RetatrutideWhite Label / Silver Crimp / Violet Cap | 1/15/2026 | 10.0 | 99.8% | 30 mg → 30.4 mg | BTLabs | View |
| TirzepatideNo Label / Silver Crimp / Clear Blue Cap | 1/9/2026 | 10.0 | 99.95% | 40 mg → 37.9 mg | Krause Analytical | View |
| TirzepatideWhite Label / Silver Crimp / Green Cap | 1/7/2026 | 10.0 | 99.7% | 10 mg → 9.9 mg | BTLabs | View |
| TirzepatideWhite Label / Blue Crimp / Clear Cap | 1/7/2026 | 10.0 | 99.9% | 50 mg → 57 mg | BTLabs | View |
| CagrilintideNo Label / Silver Crimp / Violet Cap | 12/2/2025 | 10.0 | 99.6% | 5 mg → 6.7 mg | BTLabs | View |
| TirzepatideNo Label / Silver Crimp / Clear Blue Cap | 11/25/2025 | 9.9 | 98.78% | 40 mg → 41.1 mg | Krause Analytical | View |
| RetatrutideNo Label / Silver Crimp / Violet Cap | 11/23/2025 | 10.0 | 99.9% | 30 mg → 33 mg | BTLabs | View |
| TirzepatideNo Label / Blue Crimp / Clear Cap | 11/23/2025 | 10.0 | 99.9% | 50 mg → 43.7 mg | BTLabs | View |
| TirzepatideNo Label / Silver Crimp / Clear Blue Cap | 11/23/2025 | 10.0 | 99.869% | 40 mg → 40.44 mg | Chromate | View |
| CagrilintideNo Label / Silver Crimp / Violet Cap | 11/22/2025 | 10.0 | 99.7% | 5 mg → 7.17 mg | BTLabs | View |
| CagrilintideNo Label / Silver Crimp / Green Cap | 11/14/2025 | 10.0 | 99.9% | 10 mg → 13.12 mg | BTLabs | View |
| TirzepatideNo Label / Blue Crimp / Clear Cap | 11/4/2025 | 10.0 | 99.95% | 50 mg → 42.3 mg | Krause Analytical | View |
| RetatrutideWhite Label / Green Crimp / Clear Cap | 11/4/2025 | 10.0 | 99.87% | 50 mg → 46.7 mg | Krause Analytical | View |
| RetatrutideNo Label / Green Crimp / Clear Cap | 11/3/2025 | 10.0 | 99.9% | 50 mg → 30.19 mg | BTLabs | View |
| RetatrutideNo Label / Silver Crimp / Black Cap | 10/30/2025 | 10.0 | 99.8% | 15 mg → 15.8 mg | BTLabs | View |
| TirzepatideWhite Label / Silver Crimp / Black Cap | 10/30/2025 | 10.0 | 99.7% | 60 mg → 64.49 mg | BTLabs | View |
| RetatrutideNo Label / Silver Crimp / Black Cap | 10/29/2025 | 10.0 | 99.95% | 15 mg → 14.6 mg | Krause Analytical | View |
| TirzepatideNo Label / Silver Crimp / Orange Cap | 10/24/2025 | 10.0 | 99.9% | 30 mg → 35.51 mg | BTLabs | View |
| TirzepatideNo Label / Silver Crimp / Orange Cap | 10/24/2025 | 10.0 | 99.9% | 30 mg → 35.57 mg | BTLabs | View |
| TirzepatideSilver Label / Silver Crimp / Orange Cap | 10/23/2025 | 10.0 | 99.95% | 30 mg → 25.8 mg | Krause Analytical | View |
| TirzepatideNo Label / Copper Crimp / Clear Cap | 10/23/2025 | 10.0 | 99.95% | 20 mg → 20.1 mg | Krause Analytical | View |
| TirzepatideWhite Label / Silver Crimp / Clear Blue Cap | 10/22/2025 | 10.0 | 99.862% | 40 mg → 44.31 mg | Chromate | View |
| TirzepatideWhite Label / Silver Crimp / Orange Cap | 10/22/2025 | 10.0 | 99.998% | 30 mg → 35.71 mg | Chromate | View |
| RetatrutideWhite Label / Green Crimp / Clear Cap | 10/5/2025 | 10.0 | 99.77% | 50 mg → 46.9 mg | Krause Analytical | View |
| TirzepatideWhite Label / Silver Crimp / Clear Green Cap | 10/3/2025 | 10.0 | 99.74% | 20 mg → 19.8 mg | Krause Analytical | View |
| TirzepatideNo Label / Silver Crimp / Orange Cap | 10/3/2025 | 10.0 | 99.92% | 30 mg → 33.3 mg | Krause Analytical | View |
About Nantong Guangyuan Chemical GYC
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