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Nuscience Peptides

Nuscience Peptides Reviews

Nuscience Peptides Reviews: 48 independent lab tests across 10 products, averaging 97.1% purity.

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  • 48 HPLC samples across 10 products
  • Catalog avg purity 97.1%
  • nusciencepeptides.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 46 measured samples from Nuscience Peptides, 13 came in more than 5% under the quantity on the label (28%). Another 10 measured more than 5% over. Purity across 48 readings ran from 80.79% to 100%, median 99.1%. Samples span Apr 2025 to May 2026.

Under label
13/46

more than 5% short

Median purity
99.1%

80.79%–100% range

Latest sample
May 2026

first tested Apr 2025

Lab testing results

Independent results across 10 products.

48
Total lab tests
97.1%
Avg purity
100.0%
Best score
80.8%
Worst score

Tested products

Individual lab tests

Melanotan II10.0

Date

5/8/2026

Purity

99.9%

Quantity

10 mg → 11.9 mg

Lab

BTLabs

Vial

White Label / Silver Crimp / YellowCap

View certificate
Retatrutide10.0

Date

2/13/2026

Purity

99.9%

Quantity

5 mg → 4.89 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Blue Cap

View certificate
Tirzepatide10.0

Date

1/15/2026

Purity

99.95%

Quantity

10 mg → 6.53 mg

Lab

Krause Analytical

Vial

No Label / Green Crimp / Violet Cap

View certificate
Semaglutide10.0

Date

9/10/2025

Purity

99.88%

Quantity

5 mg → 5.1 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Black Cap

View certificate
Tirzepatide10.0

Date

9/10/2025

Purity

99.95%

Quantity

15 mg → 15.7 mg

Lab

Krause Analytical

Vial

White Label / Black Crimp / White Cap

View certificate
Tirzepatide10.0

Date

9/10/2025

Purity

99.89%

Quantity

10 mg → 10.4 mg

Lab

Krause Analytical

Vial

White Label / Black Crimp / White Cap

View certificate
Semaglutide10.0

Date

9/10/2025

Purity

99.94%

Quantity

20 mg → 19.7 mg

Lab

Krause Analytical

Vial

White Label / Copper Crimp / Pink Cap

View certificate
Tirzepatide9.9

Date

8/31/2025

Purity

99%

Quantity

5 mg → 4.77 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Yellow Cap

View certificate
Retatrutide10.0

Date

7/23/2025

Purity

100%

Quantity

5 mg → 5.1 mg

Lab

BTLabs

Vial

White Label / Silver Crimp / Black Cap

View certificate
Melanotan II9.9

Date

5/21/2025

Purity

99.254%

Quantity

10 mg → 10.15 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Yellow Cap

View certificate
Retatrutide9.9

Date

5/21/2025

Purity

99.114%

Quantity

5 mg → 5.47 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Clear Teal Cap

View certificate
Melanotan II9.9

Date

5/21/2025

Purity

99.107%

Quantity

10 mg → 9.07 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Yellow Cap

View certificate
Retatrutide9.9

Date

5/21/2025

Purity

99.089%

Quantity

5 mg → 5.55 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Clear Teal Cap

View certificate
Semaglutide10.0

Date

5/16/2025

Purity

99.86%

Quantity

5 mg → 5.03 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Grey Cap

View certificate
Semaglutide10.0

Date

5/16/2025

Purity

99.86%

Quantity

5 mg → 5.03 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Grey Cap

View certificate
Semaglutide10.0

Date

5/7/2025

Purity

100%

Quantity

5 mg → 5.26 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Grey Cap

View certificate
Tirzepatide9.9

Date

5/7/2025

Purity

99.08%

Quantity

5 mg → 4.85 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Black Cap

View certificate
Tirzepatide9.9

Date

5/7/2025

Purity

99.04%

Quantity

5 mg → 4.74 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Black Cap

View certificate
Semaglutide10.0

Date

5/7/2025

Purity

100%

Quantity

5 mg → 4.86 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Grey Cap

View certificate
Semaglutide10.0

Date

5/7/2025

Purity

100%

Quantity

5 mg → 5.17 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Grey Cap

View certificate
Semaglutide10.0

Date

5/7/2025

Purity

100%

Quantity

5 mg → 5.13 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Grey Cap

View certificate
Ipamorelin9.9

Date

5/7/2025

Purity

99.02%

Quantity

5 mg → 1.73 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Clear Cap

View certificate
Ipamorelin9.9

Date

5/7/2025

Purity

98.73%

Quantity

5 mg → 1.76 mg

Lab

Krause Analytical

Vial

White Label / Silver Crimp / Clear Cap

View certificate
PT-1419.7

Date

5/7/2025

Purity

97.032%

Quantity

10 mg → 9.1 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Blue Cap

View certificate
PT-1419.7

Date

5/7/2025

Purity

97.259%

Quantity

10 mg → 9.07 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Blue Cap

View certificate
Mazdutide9.6

Date

5/6/2025

Purity

95.935%

Quantity

10 mg → 9.8 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Violet Cap

View certificate
BPC-1579.9

Date

5/6/2025

Purity

99.421%

Quantity

5 mg → 4.09 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Green Cap

View certificate
BPC-15710.0

Date

5/6/2025

Purity

99.559%

Quantity

5 mg → 4.19 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Green Cap

View certificate
GHK-Cu10.0

Date

5/6/2025

Purity

99.961%

Quantity

50 mg → 40.61 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Purple Cap

View certificate
GHK-Cu10.0

Date

5/6/2025

Purity

99.972%

Quantity

50 mg → 40.77 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Purple Cap

View certificate
Mazdutide9.3

Date

5/6/2025

Purity

93.168%

Quantity

10 mg → 9.47 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Violet Cap

View certificate
Retatrutide10.0

Date

5/5/2025

Purity

99.56%

Quantity

5 mg → 6.11 mg

Lab

MZ Biolabs

Vial

White Label / Silver Crimp / Black Cap

View certificate
Semaglutide9.7

Date

5/5/2025

Purity

96.92%

Quantity

5 mg → 5.09 mg

Lab

MZ Biolabs

Vial

White Label / Silver Crimp / Grey Cap

View certificate
CJC-12958.1

Date

5/5/2025

Purity

80.79%

Quantity

5 mg → 3.74 mg

Lab

MZ Biolabs

Vial

White Label / Silver Crimp / Purple Cap

View certificate
Semaglutide9.6

Date

5/5/2025

Purity

95.91%

Quantity

5 mg → 5.17 mg

Lab

MZ Biolabs

Vial

White Label / Silver Crimp / Grey Cap

View certificate
Retatrutide9.4

Date

5/5/2025

Purity

93.68%

Quantity

5 mg → 5.06 mg

Lab

MZ Biolabs

Vial

White Label / Silver Crimp / Black Cap

View certificate
Melanotan II9.8

Date

4/30/2025

Purity

97.656%

Quantity

10 mg → 9.88 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Yellow Cap

View certificate
Melanotan II9.8

Date

4/30/2025

Purity

97.646%

Quantity

10 mg → 9.95 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Yellow Cap

View certificate
Semaglutide9.7

Date

4/30/2025

Purity

97.451%

Quantity

5 mg → 5.24 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Grey Cap

View certificate
Semaglutide9.8

Date

4/30/2025

Purity

97.938%

Quantity

5 mg → 5.26 mg

Lab

Chromate

Vial

White Label / Silver Crimp / Grey Cap

View certificate
CJC-12958.9

Date

4/22/2025

Purity

88.685%

Quantity

5 mg → 4.08 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Purple Cap

View certificate
Melanotan II9.9

Date

4/22/2025

Purity

98.796%

Quantity

10 mg → 10.59 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Yellow Cap

View certificate
Retatrutide9.4

Date

4/22/2025

Purity

93.881%

Quantity

5 mg → 5.19 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Black Cap

View certificate
Retatrutide9.5

Date

4/22/2025

Purity

94.561%

Quantity

5 mg → 5.27 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Black Cap

View certificate
Melanotan II9.9

Date

4/22/2025

Purity

99.067%

Quantity

10 mg → 10.32 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Yellow Cap

View certificate
CJC-12959.1

Date

4/22/2025

Purity

90.592%

Quantity

5 mg → 4.18 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Purple Cap

View certificate
Semaglutide9.9

Date

4/14/2025

Purity

99.267%

Quantity

5 mg → 5.38 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Grey Cap

View certificate
Semaglutide9.9

Date

4/14/2025

Purity

99.238%

Quantity

5 mg → 5.37 mg

Lab

Janoshik

Vial

White Label / Silver Crimp / Grey Cap

View certificate

About Nuscience Peptides

Finnrick has tested 48 samples from Nuscience Peptides across 10 products.

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