Changyuan Polypeptide reviews
4 independent lab tests across 1 product · 99.8% average purity
- 4 HPLC samples across 1 products
- Catalog avg purity 99.8%
- www.changyuanpolypeptide.com
- Independent testing, no pay-to-rank
Boren Health independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Track Changyuan Polypeptide
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
What the testing shows
Across 3 measured samples from Changyuan Polypeptide, 1 came in more than 5% under the quantity on the label (33%). Another 1 measured more than 5% over. Purity across 3 readings ran from 99.7% to 99.9%, median 99.7%. Samples span Apr 2026 to Aug 2026.
- Under label
- 1/3
- Median purity
- 99.7%
- Latest sample
- Aug 2026
more than 5% short
99.7%–99.9% range
first tested Apr 2026
Lab testing results
Independent results across 1 product.
Tested products
| Product | Grade | Tests | Avg | Range | Latest | Price | $/mg |
|---|---|---|---|---|---|---|---|
| Retatrutide | DPOOR | 4 | 66.7% | 99.7% – 99.9% | 8/4/2026 | — | — |
Individual lab tests
Date
8/4/2026
Purity
99.9%
Quantity
20 mg → 21.8 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Clear Purple cap
Date
5/11/2026
Purity
—
Quantity
—
Lab
BTLabs
Vial
No Label / Gold Crimp / Clear Cap
Date
5/8/2026
Purity
99.7%
Quantity
30 mg → 18.3 mg
Lab
BTLabs
Vial
No Label / Gold Crimp / Clear Cap
Date
4/15/2026
Purity
99.7%
Quantity
30 mg → 31.1 mg
Lab
BTLabs
Vial
No Label / Gold Crimp / Clear Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| RetatrutideNo label / Silver crimp / Clear Purple cap | 8/4/2026 | 10.0 | 99.9% | 20 mg → 21.8 mg | Krause Analytical | View |
| RetatrutideNo Label / Gold Crimp / Clear Cap | 5/11/2026 | — | — | BTLabs | View | |
| RetatrutideNo Label / Gold Crimp / Clear Cap | 5/8/2026 | 10.0 | 99.7% | 30 mg → 18.3 mg | BTLabs | View |
| RetatrutideNo Label / Gold Crimp / Clear Cap | 4/15/2026 | 10.0 | 99.7% | 30 mg → 31.1 mg | BTLabs | View |
About Changyuan Polypeptide
Finnrick has tested 4 samples from Changyuan Polypeptide across 1 products.