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Yimei

Yimei reviews

116 independent lab tests across 9 products · 98.0% average purity

  • 116 HPLC samples across 9 products
  • Catalog avg purity 98.0%
  • 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 111 measured samples from Yimei, 42 came in more than 5% under the quantity on the label (38%). Another 34 measured more than 5% over. Purity across 113 readings ran from 53.44% to 99.95%, median 99.9%. Samples span Jun 2025 to Aug 2026.

Under label
42/111

more than 5% short

Median purity
99.9%

53.44%–99.95% range

Latest sample
Aug 2026

first tested Jun 2025

Ships from
China

per vendor listing

Lab testing results

Independent results across 9 products.

116
Total lab tests
98.0%
Avg purity
99.9%
Best score
53.4%
Worst score

Tested products

Individual lab tests

Epithalon10.0

Date

8/21/2026

Purity

99.6%

Quantity

10 mg → 9.7 mg

Lab

BTLabs

View certificate
TB-50010.0

Date

8/21/2026

Purity

99.6%

Quantity

5 mg → 5.7 mg

Lab

BTLabs

View certificate
BPC-1578.4

Date

8/21/2026

Purity

83.8%

Quantity

10 mg → 12.4 mg

Lab

BTLabs

View certificate
GHK-Cu10.0

Date

8/21/2026

Purity

99.7%

Quantity

50 mg → 56.6 mg

Lab

BTLabs

View certificate
TB-500

Date

8/20/2026

Purity

Quantity

Lab

BTLabs

View certificate
Retatrutide10.0

Date

8/16/2026

Purity

99.8%

Quantity

10 mg → 10.1 mg

Lab

BTLabs

View certificate
Retatrutide10.0

Date

7/10/2026

Purity

99.8%

Quantity

15 mg → 15.4 mg

Lab

BTLabs

Vial

No label / Silver crimp / Red cap

View certificate
BPC-15710.0

Date

6/17/2026

Purity

99.9%

Quantity

10 mg → 8.19 mg

Lab

Krause Analytical

Vial

No label / Silver crimp / Yellow cap

View certificate
Retatrutide10.0

Date

6/16/2026

Purity

99.9%

Quantity

20 mg → 18.5 mg

Lab

Krause Analytical

Vial

No label / Silver crimp / Yellow cap

View certificate
Tirzepatide10.0

Date

5/19/2026

Purity

99.9%

Quantity

60 mg → 54.6 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
Retatrutide10.0

Date

4/30/2026

Purity

99.8%

Quantity

20 mg → 21.5 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
CJC-12959.9

Date

4/30/2026

Purity

99.5%

Quantity

5 mg → 6.5 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Black Cap

View certificate
Ipamorelin10.0

Date

4/30/2026

Purity

99.8%

Quantity

5 mg → 4.5 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Green Cap

View certificate
Retatrutide10.0

Date

4/28/2026

Purity

99.9%

Quantity

15 mg → 15.2 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
Ipamorelin10.0

Date

4/28/2026

Purity

99.9%

Quantity

10 mg → 10.6 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
Tirzepatide10.0

Date

4/28/2026

Purity

99.9%

Quantity

30 mg → 36.5 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
Retatrutide10.0

Date

4/28/2026

Purity

99.9%

Quantity

30 mg → 28.1 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
Retatrutide10.0

Date

4/28/2026

Purity

99.9%

Quantity

30 mg → 27.3 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
CJC-12959.9

Date

4/28/2026

Purity

99.4%

Quantity

5 mg → 5.06 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Black Cap

View certificate
GHK-Cu10.0

Date

4/23/2026

Purity

99.9%

Quantity

100 mg → 92.5 mg

Lab

Krause Analytical

Vial

No Label / Copper Crimp / Clear Cap

View certificate
Retatrutide9.8

Date

4/23/2026

Purity

98.4%

Quantity

50 mg → 50.4 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
BPC-15710.0

Date

3/21/2026

Purity

99.8%

Quantity

10 mg → 23.8 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Red Cap

View certificate
Retatrutide10.0

Date

3/19/2026

Purity

99.9%

Quantity

20 mg → 20.1 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
CJC-12958.9

Date

3/18/2026

Purity

89.3%

Quantity

5 mg → 4.39 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Black Cap

View certificate
Retatrutide10.0

Date

3/18/2026

Purity

99.9%

Quantity

30 mg → 25 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
Retatrutide10.0

Date

3/10/2026

Purity

99.9%

Quantity

10 mg → 9.71 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Tesamorelin10.0

Date

3/7/2026

Purity

99.7%

Quantity

5 mg → 5 mg

Lab

BTLabs

Vial

White Label / Silver Crimp / Orange Cap

View certificate
Retatrutide10.0

Date

3/7/2026

Purity

99.7%

Quantity

15 mg → 15.6 mg

Lab

BTLabs

Vial

White Label / Silver Crimp / Red Cap

View certificate
TB-50010.0

Date

3/7/2026

Purity

99.9%

Quantity

5 mg → 4.7 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Red Cap

View certificate
Ipamorelin10.0

Date

3/6/2026

Purity

99.9%

Quantity

5 mg → 4.28 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Clear Pink Cap

View certificate
Retatrutide10.0

Date

3/6/2026

Purity

99.9%

Quantity

5 mg → 5.96 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
GHK-Cu10.0

Date

3/6/2026

Purity

99.9%

Quantity

100 mg → 83.5 mg

Lab

Krause Analytical

Vial

No Label / Copper Crimp / Clear Cap

View certificate
CJC-129510.0

Date

3/6/2026

Purity

99.9%

Quantity

5 mg → 4.69 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Black Cap

View certificate
BPC-15710.0

Date

3/6/2026

Purity

99.9%

Quantity

5 mg → 4.47 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
BPC-15710.0

Date

3/6/2026

Purity

99.9%

Quantity

10 mg → 9.8 mg

Lab

Krause Analytical

Vial

No Label / No Crimp / White Cap

View certificate
BPC-157

Date

3/4/2026

Purity

Quantity

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
GHK-Cu10.0

Date

3/4/2026

Purity

99.7%

Quantity

50 mg → 58 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Clear Cap

View certificate
TB-5005.3

Date

3/4/2026

Purity

53.44%

Quantity

10 mg → 13.2 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
Retatrutide10.0

Date

3/4/2026

Purity

99.6%

Quantity

10 mg → 10.8 mg

Lab

BTLabs

Vial

No Label / Blue Crimp / Clear Cap

View certificate
Retatrutide10.0

Date

3/4/2026

Purity

99.9%

Quantity

10 mg → 10.1 mg

Lab

Krause Analytical

Vial

No Label / Blue Crimp / Clear Cap

View certificate
CJC-129510.0

Date

3/4/2026

Purity

99.72%

Quantity

5 mg → 5.06 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Black Cap

View certificate
BPC-15710.0

Date

3/4/2026

Purity

99.9%

Quantity

10 mg → 9.14 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
Retatrutide10.0

Date

3/4/2026

Purity

99.9%

Quantity

5 mg → 4.84 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
Retatrutide9.9

Date

3/3/2026

Purity

98.54%

Quantity

10 mg → 8.76 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Retatrutide10.0

Date

3/3/2026

Purity

99.53%

Quantity

50 mg → 48 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
Retatrutide10.0

Date

3/2/2026

Purity

99.86%

Quantity

15 mg → 14.2 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
Tesamorelin10.0

Date

3/2/2026

Purity

99.9%

Quantity

5 mg → 4.4 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Orange Cap

View certificate
GHK-Cu10.0

Date

3/2/2026

Purity

99.9%

Quantity

50 mg → 44.2 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Clear Cap

View certificate
Retatrutide10.0

Date

3/2/2026

Purity

99.86%

Quantity

10 mg → 10.2 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Tirzepatide10.0

Date

3/2/2026

Purity

99.9%

Quantity

10 mg → 13.8 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Gray Cap

View certificate
Ipamorelin10.0

Date

3/2/2026

Purity

99.9%

Quantity

5 mg → 4.73 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
Retatrutide10.0

Date

3/1/2026

Purity

99.7%

Quantity

10 mg → 9.4 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Tirzepatide10.0

Date

2/26/2026

Purity

99.63%

Quantity

20 mg → 21 mg

Lab

Krause Analytical

View certificate
Ipamorelin10.0

Date

2/26/2026

Purity

99.7%

Quantity

5 mg → 4.69 mg

Lab

Krause Analytical

View certificate
Tesamorelin10.0

Date

2/26/2026

Purity

99.81%

Quantity

10 mg → 10.6 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Retatrutide9.4

Date

2/26/2026

Purity

93.98%

Quantity

10 mg → 9.59 mg

Lab

Krause Analytical

View certificate
Retatrutide9.8

Date

2/26/2026

Purity

97.93%

Quantity

10 mg → 12.6 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
CJC-129510.0

Date

2/26/2026

Purity

99.9%

Quantity

5 mg → 5.14 mg

Lab

Krause Analytical

View certificate
GHK-Cu10.0

Date

2/26/2026

Purity

99.9%

Quantity

50 mg → 46.8 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Clear Cap

View certificate
GHK-Cu10.0

Date

2/26/2026

Purity

99.9%

Quantity

100 mg → 91.6 mg

Lab

Krause Analytical

Vial

No Label / Copper Crimp / Clear Cap

View certificate
Retatrutide10.0

Date

2/26/2026

Purity

99.9%

Quantity

10 mg → 9.57 mg

Lab

Krause Analytical

Vial

No Label / Blue Crimp / Clear Cap

View certificate
GHK-Cu10.0

Date

2/26/2026

Purity

99.9%

Quantity

100 mg → 83.7 mg

Lab

Krause Analytical

View certificate
Retatrutide10.0

Date

2/22/2026

Purity

99.9%

Quantity

50 mg → 48.3 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
Retatrutide10.0

Date

2/22/2026

Purity

99.82%

Quantity

5 mg → 5.06 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
GHK-Cu10.0

Date

2/22/2026

Purity

99.9%

Quantity

50 mg → 47.6 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Clear Cap

View certificate
Retatrutide10.0

Date

2/22/2026

Purity

99.66%

Quantity

20 mg → 21.2 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
GHK-Cu10.0

Date

2/22/2026

Purity

99.9%

Quantity

50 mg → 45 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Clear Cap

View certificate
GHK-Cu10.0

Date

2/22/2026

Purity

99.9%

Quantity

50 mg → 43.8 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Clear Cap

View certificate
Retatrutide

Date

2/20/2026

Purity

Quantity

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Retatrutide10.0

Date

2/20/2026

Purity

99.9%

Quantity

10 mg → 9.37 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Retatrutide10.0

Date

2/20/2026

Purity

99.9%

Quantity

10 mg → 8.93 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Retatrutide10.0

Date

2/20/2026

Purity

99.6%

Quantity

10 mg → 9.9 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Tirzepatide10.0

Date

2/20/2026

Purity

99.9%

Quantity

5 mg → 4.72 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
GHK-Cu10.0

Date

2/20/2026

Purity

99.9%

Quantity

100 mg → 79.8 mg

Lab

Krause Analytical

Vial

No Label / Copper Crimp / Clear Cap

View certificate
CJC-129510.0

Date

2/20/2026

Purity

99.9%

Quantity

5 mg → 5.28 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Black Cap

View certificate
Ipamorelin10.0

Date

2/20/2026

Purity

99.9%

Quantity

10 mg → 10.6 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
Retatrutide10.0

Date

2/20/2026

Purity

99.7%

Quantity

10 mg → 17 mg

Lab

BTLabs

Vial

White Label / Silver Crimp / Red Cap

View certificate
Retatrutide10.0

Date

2/18/2026

Purity

99.9%

Quantity

30 mg → 33.9 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
Retatrutide10.0

Date

2/16/2026

Purity

99.9%

Quantity

5 mg → 5.38 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
Retatrutide10.0

Date

2/16/2026

Purity

99.9%

Quantity

10 mg → 13.2 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
Retatrutide10.0

Date

2/16/2026

Purity

99.9%

Quantity

10 mg → 9.94 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
BPC-15710.0

Date

2/13/2026

Purity

99.9%

Quantity

5 mg → 3.69 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
GHK-Cu10.0

Date

2/13/2026

Purity

99.9%

Quantity

50 mg → 45.7 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Clear Cap

View certificate
Retatrutide10.0

Date

2/13/2026

Purity

99.9%

Quantity

10 mg → 13.2 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
BPC-15710.0

Date

2/10/2026

Purity

99.8%

Quantity

5 mg → 6.1 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Green Cap

View certificate
Retatrutide10.0

Date

2/10/2026

Purity

99.6%

Quantity

10 mg → 10.8 mg

Lab

BTLabs

Vial

No Label / Blue Crimp / Clear Cap

View certificate
Ipamorelin10.0

Date

2/4/2026

Purity

99.8%

Quantity

5 mg → 4.5 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Green Cap

View certificate
Retatrutide9.9

Date

2/4/2026

Purity

99.3%

Quantity

5 mg → 5 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Red Cap

View certificate
Retatrutide10.0

Date

2/4/2026

Purity

99.9%

Quantity

5 mg → 5.52 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
GHK-Cu10.0

Date

2/4/2026

Purity

99.9%

Quantity

50 mg → 42.5 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Clear Cap

View certificate
Retatrutide9.9

Date

1/29/2026

Purity

99.44%

Quantity

20 mg → 20.4 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
Tesamorelin10.0

Date

1/29/2026

Purity

99.9%

Quantity

5 mg → 4.39 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Orange Cap

View certificate
Retatrutide10.0

Date

1/26/2026

Purity

99.9%

Quantity

10 mg → 10.4 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Retatrutide10.0

Date

1/26/2026

Purity

99.9%

Quantity

10 mg → 10.2 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Retatrutide10.0

Date

1/26/2026

Purity

99.8%

Quantity

10 mg → 8.9 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Tirzepatide10.0

Date

1/15/2026

Purity

99.8%

Quantity

20 mg → 24.1 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Violet Cap

View certificate
Tirzepatide10.0

Date

1/9/2026

Purity

99.87%

Quantity

20 mg → 20.4 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
Retatrutide10.0

Date

1/7/2026

Purity

99.95%

Quantity

10 mg → 10.7 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Retatrutide10.0

Date

12/30/2025

Purity

99.83%

Quantity

10 mg → 12.1 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Retatrutide10.0

Date

12/23/2025

Purity

99.93%

Quantity

10 mg → 12 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
GHK-Cu10.0

Date

12/17/2025

Purity

99.95%

Quantity

50 mg → 46.8 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Clear Cap

View certificate
TB-50010.0

Date

12/6/2025

Purity

99.9%

Quantity

10 mg → 10.3 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
BPC-1579.8

Date

12/2/2025

Purity

98.5%

Quantity

10 mg → 11.3 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
Retatrutide10.0

Date

11/25/2025

Purity

99.95%

Quantity

20 mg → 21.7 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
GHK-Cu10.0

Date

11/25/2025

Purity

99.94%

Quantity

50 mg → 49.7 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Clear Cap

View certificate
Tesamorelin7.2

Date

11/25/2025

Purity

71.61%

Quantity

5 mg → 3.8 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Orange Cap

View certificate
Retatrutide10.0

Date

11/25/2025

Purity

99.95%

Quantity

10 mg → 9.96 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Retatrutide10.0

Date

11/18/2025

Purity

99.82%

Quantity

30 mg → 27 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Green Cap

View certificate
BPC-15710.0

Date

11/14/2025

Purity

99.8%

Quantity

10 mg → 11.8 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
TB-5009.5

Date

11/4/2025

Purity

95.44%

Quantity

10 mg → 9.6 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
BPC-15710.0

Date

10/24/2025

Purity

99.9%

Quantity

10 mg → 11.7 mg

Lab

BTLabs

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
TB-50010.0

Date

10/23/2025

Purity

99.71%

Quantity

10 mg → 8.36 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

View certificate
Retatrutide10.0

Date

10/23/2025

Purity

99.95%

Quantity

20 mg → 24.1 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Yellow Cap

View certificate
Ipamorelin10.0

Date

10/23/2025

Purity

99.95%

Quantity

10 mg → 9.7 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Red Cap

View certificate
Tesamorelin10.0

Date

10/23/2025

Purity

99.95%

Quantity

10 mg → 8.11 mg

Lab

Krause Analytical

Vial

No Label / Silver Crimp / Blue Cap

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Retatrutide10.0

Date

6/20/2025

Purity

99.82%

Quantity

10 mg → 11.3 mg

Lab

Krause Analytical

Vial

No Label / Blue Crimp / Clear Cap

View certificate

About Yimei

According to Pepaura Yimei is rebranding to Pepturion

Contact

  • China

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