Nuscience Peptides Review
Nuscience Peptides reviews: 49 independent lab tests across 10 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Is Nuscience Peptides legit? Lab record: Mixed
How we rate- 49 independent tests
- 34 of 47 lots filled to label
- Median purity 99.11%
- 5 of 6 products graded D or E
Some of Nuscience Peptides's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Semaglutide
Nuscience Peptides graded E. Pura Peptides's Semaglutide graded A across 1 test, $5.00 / mg.
Buy from Pura PeptidesAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where Nuscience Peptides graded D or E, these shops' samples of the same peptide graded A or B. Ordered by grade, then price per mg. Partner status never changes the order.
Semaglutide
Nuscience Peptides: grade ETirzepatide
Nuscience Peptides: grade EBPC-157
Nuscience Peptides: grade ENuscience Peptides products we've tested
Best-graded first. Grades come from the share of each product's samples that passed purity and quantity checks. Buy links open Nuscience Peptides' site.
- GHK-CuAGREAT
- Tests
- 2
- Passed
- 100.0%
- SemaglutideEBAD
- Tests
- 14
- Passed
- 57.1%
- RetatrutideEBAD
- Tests
- 8
- Passed
- 37.5%
- TirzepatideEBAD
- Tests
- 7
- Passed
- 57.1%
- Melanotan IIEBAD
- Tests
- 7
- Passed
- 14.3%
- BPC-157EBAD
- Tests
- 2
- Passed
- 50.0%
- CJC-1295—
- Tests
- 3
- Passed
- —
- Ipamorelin—
- Tests
- 2
- Passed
- —
- PT-141—
- Tests
- 2
- Passed
- —
- Mazdutide—
- Tests
- 2
- Passed
- —
What the testing shows
Across 47 measured samples from Nuscience Peptides, 13 came in more than 5% under the quantity on the label (28%). Another 11 measured more than 5% over. Purity across 49 readings ran from 80.79% to 100%, median 99.11%. Samples span Apr 2025 to Sep 2026.
- Under label
- 13/47
- Median purity
- 99.11%
- Latest sample
- Sep 2026
more than 5% short
80.79%–100% range
first tested Apr 2025
Our read on Nuscience Peptides
19 of Nuscience Peptides' 49 graded samples passed (39%), and 18% of all samples were sent in by buyers rather than by the shop.
When a sample failed, the most common reason was purity under 99.5% (30 times).
Against the 302 shops with at least five graded tests, Nuscience Peptides' pass rate is at or above 8% of them, and it has more tests on record than 78% of them.
When and how Nuscience Peptides was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (18), Janoshik (12), Chromate (12), MZ Biolabs (5)
- Who sent the samples
- buyers 18%, testing programme 82%
- Batches covered
- 9 distinct batch numbers; 2 checked for endotoxins
Why Nuscience Peptides' failed samples failed
The 6 most recent failed tests, with the lab's reason.
Tirzepatide · Aug 31, 2025
purity under 99.5%
Melanotan II · May 21, 2025
purity under 99.5%
Melanotan II · May 21, 2025
purity under 99.5%
Retatrutide · May 21, 2025
purity under 99.5%
Retatrutide · May 21, 2025
purity under 99.5%
Ipamorelin · May 7, 2025
purity under 99.5%; amount in the vial more than 35% off the label
Lab testing results
Independent results across 10 products.
Individual lab tests
Date
9/24/2026
Purity
99.9%
Quantity
10 mg → 10.6 mg
Lab
Krause Analytical
Vial
White label / Green crimp / Clear Green cap
Date
5/8/2026
Purity
99.9%
Quantity
10 mg → 11.9 mg
Lab
BTLabs
Vial
White Label / Silver Crimp / YellowCap
Date
2/13/2026
Purity
99.9%
Quantity
5 mg → 4.89 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / Blue Cap
Date
1/15/2026
Purity
99.95%
Quantity
10 mg → 6.53 mg
Lab
Krause Analytical
Vial
No Label / Green Crimp / Violet Cap
Date
9/10/2025
Purity
99.95%
Quantity
15 mg → 15.7 mg
Lab
Krause Analytical
Vial
White Label / Black Crimp / White Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| TirzepatideWhite label / Green crimp / Clear Green cap | 9/24/2026 | 10.0 | 99.9% | 10 mg → 10.6 mg | Krause Analytical | View |
| Melanotan IIWhite Label / Silver Crimp / YellowCap | 5/8/2026 | 10.0 | 99.9% | 10 mg → 11.9 mg | BTLabs | View |
| RetatrutideWhite Label / Silver Crimp / Blue Cap | 2/13/2026 | 10.0 | 99.9% | 5 mg → 4.89 mg | Krause Analytical | View |
| TirzepatideNo Label / Green Crimp / Violet Cap | 1/15/2026 | 10.0 | 99.95% | 10 mg → 6.53 mg | Krause Analytical | View |
| TirzepatideWhite Label / Black Crimp / White Cap | 9/10/2025 | 10.0 | 99.95% | 15 mg → 15.7 mg | Krause Analytical | View |
Which Nuscience Peptides products tested best
GHK-Cu has the strongest record, graded A or B.
Semaglutide, Tirzepatide, BPC-157, Retatrutide and Melanotan II graded D or E: a large share of their samples missed purity or quantity thresholds.
Buying from Nuscience Peptides
If you order from Nuscience Peptides, the A- and B-graded products are the safer picks on this record. For the weaker ones, the better-tested options on this page come from other shops.
We don't track Nuscience Peptides' prices yet. Shipping, payment and refund terms are on their site.
The official store is nusciencepeptides.com. Check the address before you pay.
What to check before you pay
- The lot number on the vial matches the certificate
- The certificate names the lab and the test date
- Fill versus label, not purity alone
- A refund policy in writing
Track Nuscience Peptides
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Nuscience Peptides: common questions
Is Nuscience Peptides legit?
We rate lab records, not businesses. Mixed lab record: 49 independent tests, 34 of 47 lots filled to label, median purity 99.11%, 5 of 6 products graded D or E. Each result links to its original certificate in the table above.
What do Nuscience Peptides reviews say?
We don't hold scored customer reviews for Nuscience Peptides yet. The independent lab results on this page are the evidence we have.
Which Nuscience Peptides peptides tested best?
We have graded 6 Nuscience Peptides products. GHK-Cu graded A or B. Semaglutide, Tirzepatide, BPC-157, Retatrutide and Melanotan II graded D or E.
Is there a Nuscience Peptides coupon code?
We don't have a verified Nuscience Peptides coupon code. A discount changes the price, not what is in the vial.
Ordering from Nuscience Peptides?
Mixed lab record: 49 independent tests, 34 of 47 lots filled to label, median purity 99.11%, 5 of 6 products graded D or E.
Contact
- US,NM 87111
- nusciencepeptides.com