Is Zhuoyan Lab Legit
Is Zhuoyan Lab Legit? 44 independent lab tests across 4 products, averaging 97.7% purity.
- 44 HPLC samples across 4 products
- Catalog avg purity 97.7%
- www.zyzhuoyanlab.com
- 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 42 measured samples from ZhuoYan lab, 6 came in more than 5% under the quantity on the label (14%). Another 17 measured more than 5% over. Purity across 42 readings ran from 65.36% to 99.95%, median 99.7%. Samples span Jul 2025 to Aug 2026.
- Under label
- 6/42
- Median purity
- 99.7%
- Latest sample
- Aug 2026
more than 5% short
65.36%–99.95% range
first tested Jul 2025
Lab testing results
Independent results across 4 products.
Tested products
| Product | Grade | Tests | Avg | Range | Latest | Price | $/mg |
|---|---|---|---|---|---|---|---|
| GHK-Cu | AGREAT | 4 | 100.0% | 99.5% – 99.9% | 7/23/2026 | — | — |
| Retatrutide | AGREAT | 13 | 92.3% | 99.4% – 99.9% | 6/5/2026 | — | — |
| Tirzepatide | COKAY | 21 | 71.4% | 98.8% – 99.9% | 8/13/2026 | — | — |
| Tesamorelin | EBAD | 6 | % | 65.4% – 99.7% | 2/20/2026 | — | — |
Individual lab tests
Date
8/13/2026
Purity
—
Quantity
—
Lab
Krause Analytical
Vial
White label / Silver crimp / White cap
Date
7/23/2026
Purity
99.5%
Quantity
100 mg → 86.4 mg
Lab
Krause Analytical
Vial
No label / Silver crimp / Clear cap
Date
6/5/2026
Purity
99.9%
Quantity
60 mg → 61.2 mg
Lab
Krause Analytical
Vial
No label / Copper crimp / Clear cap
Date
4/23/2026
Purity
99.9%
Quantity
30 mg → 30.6 mg
Lab
Krause Analytical
Vial
Silver Label / Copper Crimp / Clear Cap
Date
3/6/2026
Purity
99.9%
Quantity
20 mg → 20 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / Gray Cap
Date
3/6/2026
Purity
99.9%
Quantity
100 mg → 92.6 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / Clear Cap
Date
2/20/2026
Purity
99.7%
Quantity
50 mg → 45.3 mg
Lab
BTLabs
Vial
No Label / Copper Crimp / Clear Cap
Date
2/20/2026
Purity
99.7%
Quantity
10 mg → 14.9 mg
Lab
BTLabs
Vial
No Label / Silver Crimp / White Cap
Date
2/11/2026
Purity
99.9%
Quantity
10 mg → 10.6 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Clear Cap
Date
1/29/2026
Purity
99.9%
Quantity
50 mg → 56.2 mg
Lab
Krause Analytical
Vial
Yellow Label / Silver Crimp / Red Cap
Date
1/29/2026
Purity
99.9%
Quantity
10 mg → 9.78 mg
Lab
Krause Analytical
Vial
Yellow Label / Silver Crimp / Yellow Cap
Date
1/29/2026
Purity
—
Quantity
—
Lab
Krause Analytical
Vial
Green Clear Label / Silver Crimp / White Cap
Date
1/29/2026
Purity
97.46%
Quantity
10 mg → 8.49 mg
Lab
Krause Analytical
Vial
Green Clear Label / Silver Crimp / Violet Cap
Date
1/19/2026
Purity
99.95%
Quantity
15 mg → 15.6 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Blue Cap
Date
1/15/2026
Purity
99.7%
Quantity
100 mg → 117.8 mg
Lab
BTLabs
Vial
Clear Label / Silver Crimp / Blue Cap
Date
1/15/2026
Purity
99.8%
Quantity
10 mg → 11.5 mg
Lab
BTLabs
Vial
Clear Label / Silver Crimp / Yellow Cap
Date
1/15/2026
Purity
99.7%
Quantity
20 mg → 19.7 mg
Lab
BTLabs
Vial
Yellow Clear Label / Copper Crimp / Clear Cap
Date
1/1/2026
Purity
99.8%
Quantity
50 mg → 53.1 mg
Lab
BTLabs
Vial
Yellow Label / Silver Crimp / Clear Yellow Cap
Date
1/1/2026
Purity
99.9%
Quantity
50 mg → 48 mg
Lab
BTLabs
Vial
Yellow Label / Silver Crimp / Red Cap
Date
12/17/2025
Purity
99.89%
Quantity
40 mg → 40.9 mg
Lab
Krause Analytical
Vial
Red Label / Silver Crimp / Red Cap
Date
12/17/2025
Purity
98.01%
Quantity
10 mg → 10.3 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / White Cap
Date
12/17/2025
Purity
99.95%
Quantity
50 mg → 56.1 mg
Lab
Krause Analytical
Vial
Clear Label / Copper Crimp / Clear Cap
Date
12/13/2025
Purity
99.5%
Quantity
20 mg → 23.5 mg
Lab
BTLabs
Vial
White Label / Copper Crimp / Clear Cap
Date
12/13/2025
Purity
99.7%
Quantity
30 mg → 35.2 mg
Lab
BTLabs
Vial
White Label / Silver Crimp / Orange Cap
Date
11/25/2025
Purity
65.36%
Quantity
10 mg → 7.77 mg
Lab
Krause Analytical
Vial
Clear Label / Silver Crimp / White Cap
Date
11/25/2025
Purity
99.95%
Quantity
20 mg → 20.3 mg
Lab
Krause Analytical
Vial
White Label / Copper Crimp / Clear Cap
Date
11/17/2025
Purity
99.95%
Quantity
15 mg → 15.3 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / Clear Pink Cap
Date
11/14/2025
Purity
99.7%
Quantity
10 mg → 10.9 mg
Lab
BTLabs
Vial
Clear Label / Silver Crimp / White Cap
Date
11/14/2025
Purity
99.6%
Quantity
60 mg → 69.8 mg
Lab
BTLabs
Vial
Clear Label / Silver Crimp / Clear Blue Cap
Date
11/4/2025
Purity
99.95%
Quantity
10 mg → 10.6 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Yellow Cap
Date
10/21/2025
Purity
99.67%
Quantity
10 mg → 9.84 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Green Cap
Date
10/9/2025
Purity
99.57%
Quantity
30 mg → 29 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Black Cap
Date
10/7/2025
Purity
98.8%
Quantity
10 mg → 14.5 mg
Lab
BTLabs
Vial
White Label / Silver Crimp / Yellow Cap
Date
10/6/2025
Purity
99.3%
Quantity
20 mg → 24.6 mg
Lab
BTLabs
Vial
White Label / Silver Crimp / Gray Cap
Date
9/30/2025
Purity
99.92%
Quantity
20 mg → 19.4 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Gray Cap
Date
9/18/2025
Purity
99.95%
Quantity
30 mg → 33.4 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / Clear Blue Cap
Date
9/18/2025
Purity
99.93%
Quantity
10 mg → 9.06 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Green Cap
Date
8/6/2025
Purity
99.56%
Quantity
5 mg → 5.62 mg
Lab
Freedom Diagnostics
Vial
No Label / Silver Crimp / Red Cap
Date
8/5/2025
Purity
99.712%
Quantity
20 mg → 20.56 mg
Lab
Janoshik
Vial
Clear Label / Silver Crimp / Grey Cap
Date
8/5/2025
Purity
98.044%
Quantity
10 mg → 10.24 mg
Lab
Chromate
Vial
No Label / Silver Crimp / Black Cap
Date
8/4/2025
Purity
99.369%
Quantity
15 mg → 16.97 mg
Lab
Janoshik
Vial
No Label / Silver Crimp / Clear Cap
Date
7/28/2025
Purity
99.36%
Quantity
20 mg → 19.4 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / Grey Cap
Date
7/3/2025
Purity
99.39%
Quantity
10 mg → 9.68 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / White Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideWhite label / Silver crimp / White cap | 8/13/2026 | — | — | Krause Analytical | View | |
| GHK-CuNo label / Silver crimp / Clear cap | 7/23/2026 | 9.9 | 99.5% | 100 mg → 86.4 mg | Krause Analytical | View |
| RetatrutideNo label / Copper crimp / Clear cap | 6/5/2026 | 10.0 | 99.9% | 60 mg → 61.2 mg | Krause Analytical | View |
| TirzepatideSilver Label / Copper Crimp / Clear Cap | 4/23/2026 | 10.0 | 99.9% | 30 mg → 30.6 mg | Krause Analytical | View |
| TirzepatideWhite Label / Silver Crimp / Gray Cap | 3/6/2026 | 10.0 | 99.9% | 20 mg → 20 mg | Krause Analytical | View |
| GHK-CuWhite Label / Silver Crimp / Clear Cap | 3/6/2026 | 10.0 | 99.9% | 100 mg → 92.6 mg | Krause Analytical | View |
| GHK-CuNo Label / Copper Crimp / Clear Cap | 2/20/2026 | 10.0 | 99.7% | 50 mg → 45.3 mg | BTLabs | View |
| TesamorelinNo Label / Silver Crimp / White Cap | 2/20/2026 | 10.0 | 99.7% | 10 mg → 14.9 mg | BTLabs | View |
| RetatrutideNo Label / Silver Crimp / Clear Cap | 2/11/2026 | 10.0 | 99.9% | 10 mg → 10.6 mg | Krause Analytical | View |
| TirzepatideYellow Label / Silver Crimp / Red Cap | 1/29/2026 | 10.0 | 99.9% | 50 mg → 56.2 mg | Krause Analytical | View |
| TirzepatideYellow Label / Silver Crimp / Yellow Cap | 1/29/2026 | 10.0 | 99.9% | 10 mg → 9.78 mg | Krause Analytical | View |
| TesamorelinGreen Clear Label / Silver Crimp / White Cap | 1/29/2026 | — | — | Krause Analytical | View | |
| TesamorelinGreen Clear Label / Silver Crimp / Violet Cap | 1/29/2026 | 9.7 | 97.46% | 10 mg → 8.49 mg | Krause Analytical | View |
| TirzepatideNo Label / Silver Crimp / Blue Cap | 1/19/2026 | 10.0 | 99.95% | 15 mg → 15.6 mg | Krause Analytical | View |
| TirzepatideClear Label / Silver Crimp / Blue Cap | 1/15/2026 | 10.0 | 99.7% | 100 mg → 117.8 mg | BTLabs | View |
| TirzepatideClear Label / Silver Crimp / Yellow Cap | 1/15/2026 | 10.0 | 99.8% | 10 mg → 11.5 mg | BTLabs | View |
| RetatrutideYellow Clear Label / Copper Crimp / Clear Cap | 1/15/2026 | 10.0 | 99.7% | 20 mg → 19.7 mg | BTLabs | View |
| TirzepatideYellow Label / Silver Crimp / Clear Yellow Cap | 1/1/2026 | 10.0 | 99.8% | 50 mg → 53.1 mg | BTLabs | View |
| TirzepatideYellow Label / Silver Crimp / Red Cap | 1/1/2026 | 10.0 | 99.9% | 50 mg → 48 mg | BTLabs | View |
| RetatrutideRed Label / Silver Crimp / Red Cap | 12/17/2025 | 10.0 | 99.89% | 40 mg → 40.9 mg | Krause Analytical | View |
| TesamorelinWhite Label / Silver Crimp / White Cap | 12/17/2025 | 9.8 | 98.01% | 10 mg → 10.3 mg | Krause Analytical | View |
| GHK-CuClear Label / Copper Crimp / Clear Cap | 12/17/2025 | 10.0 | 99.95% | 50 mg → 56.1 mg | Krause Analytical | View |
| RetatrutideWhite Label / Copper Crimp / Clear Cap | 12/13/2025 | 9.9 | 99.5% | 20 mg → 23.5 mg | BTLabs | View |
| TirzepatideWhite Label / Silver Crimp / Orange Cap | 12/13/2025 | 10.0 | 99.7% | 30 mg → 35.2 mg | BTLabs | View |
| TesamorelinClear Label / Silver Crimp / White Cap | 11/25/2025 | 6.5 | 65.36% | 10 mg → 7.77 mg | Krause Analytical | View |
| RetatrutideWhite Label / Copper Crimp / Clear Cap | 11/25/2025 | 10.0 | 99.95% | 20 mg → 20.3 mg | Krause Analytical | View |
| TirzepatideWhite Label / Silver Crimp / Clear Pink Cap | 11/17/2025 | 10.0 | 99.95% | 15 mg → 15.3 mg | Krause Analytical | View |
| RetatrutideClear Label / Silver Crimp / White Cap | 11/14/2025 | 10.0 | 99.7% | 10 mg → 10.9 mg | BTLabs | View |
| RetatrutideClear Label / Silver Crimp / Clear Blue Cap | 11/14/2025 | 10.0 | 99.6% | 60 mg → 69.8 mg | BTLabs | View |
| TirzepatideNo Label / Silver Crimp / Yellow Cap | 11/4/2025 | 10.0 | 99.95% | 10 mg → 10.6 mg | Krause Analytical | View |
| RetatrutideNo Label / Silver Crimp / Green Cap | 10/21/2025 | 10.0 | 99.67% | 10 mg → 9.84 mg | Krause Analytical | View |
| RetatrutideNo Label / Silver Crimp / Black Cap | 10/9/2025 | 10.0 | 99.57% | 30 mg → 29 mg | Krause Analytical | View |
| TirzepatideWhite Label / Silver Crimp / Yellow Cap | 10/7/2025 | 9.9 | 98.8% | 10 mg → 14.5 mg | BTLabs | View |
| TirzepatideWhite Label / Silver Crimp / Gray Cap | 10/6/2025 | 9.9 | 99.3% | 20 mg → 24.6 mg | BTLabs | View |
| TirzepatideNo Label / Silver Crimp / Gray Cap | 9/30/2025 | 10.0 | 99.92% | 20 mg → 19.4 mg | Krause Analytical | View |
| TirzepatideWhite Label / Silver Crimp / Clear Blue Cap | 9/18/2025 | 10.0 | 99.95% | 30 mg → 33.4 mg | Krause Analytical | View |
| RetatrutideNo Label / Silver Crimp / Green Cap | 9/18/2025 | 10.0 | 99.93% | 10 mg → 9.06 mg | Krause Analytical | View |
| RetatrutideNo Label / Silver Crimp / Red Cap | 8/6/2025 | 10.0 | 99.56% | 5 mg → 5.62 mg | Freedom Diagnostics | View |
| TirzepatideClear Label / Silver Crimp / Grey Cap | 8/5/2025 | 10.0 | 99.712% | 20 mg → 20.56 mg | Janoshik | View |
| TesamorelinNo Label / Silver Crimp / Black Cap | 8/5/2025 | 9.8 | 98.044% | 10 mg → 10.24 mg | Chromate | View |
| RetatrutideNo Label / Silver Crimp / Clear Cap | 8/4/2025 | 9.9 | 99.369% | 15 mg → 16.97 mg | Janoshik | View |
| TirzepatideWhite Label / Silver Crimp / Grey Cap | 7/28/2025 | 9.9 | 99.36% | 20 mg → 19.4 mg | Krause Analytical | View |
| TirzepatideNo Label / Silver Crimp / White Cap | 7/3/2025 | 9.9 | 99.39% | 10 mg → 9.68 mg | Krause Analytical | View |
| Tirzepatide | 7/2/2025 | 9.9 | 99.14% | 5 mg → 4.8 mg | Krause Analytical | View |
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