Science reviews
Science reviews: 12 independent lab tests across 4 products, with a mixed lab record.
Written by the Peptide Vendor Reviews editorial team
Is Science legit? Lab record: Mixed
How we rate- 12 independent tests
- 7 of 12 lots filled to label
- Median purity 99.47%
- 1 of 2 products graded D or E
Some of Science's products graded D or E. The shops below tested A or B for the same peptides.
Better-tested Melanotan II
Science graded E. Eternal Peptides's Melanotan II graded A across 4 tests, $4.00 / mg.
Buy from Eternal PeptidesAll better-tested optionsPeptide Vendor Reviews independently tests products and verifies reviews. Public methodology, no pay-to-rank.
Better-tested options
Where Science 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.
Melanotan II
Science: grade EScience 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 Science's site.
- GHK-CuAGREAT
- Tests
- 4
- Passed
- 100.0%
- Melanotan IIEBAD
- Tests
- 2
- Passed
- 50.0%
- Tests
- 4
- Passed
- —
- Tests
- 2
- Passed
- —
What the testing shows
Across 12 measured samples from Science, 5 came in more than 5% under the quantity on the label (42%). Another 7 measured more than 5% over. Purity across 12 readings ran from 98.24% to 99.91%, median 99.47%. Samples span May 2025 to Jul 2025.
- Under label
- 5/12
- Median purity
- 99.47%
- Latest sample
- Jul 2025
- Ships from
- United States
more than 5% short
98.24%–99.91% range
first tested May 2025
per vendor listing
Our read on Science
5 of Science's 12 graded samples passed (42%), and 0% 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% (6 times).
Against the 302 shops with at least five graded tests, Science's pass rate is at or above 10% of them, and it has more tests on record than 37% of them.
When and how Science was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Janoshik (8), Krause Analytical (4)
- Who sent the samples
- testing programme 100%
- Batches covered
- 4 distinct batch numbers
Why Science's failed samples failed
The 6 most recent failed tests, with the lab's reason.
PT-141 · May 21, 2025
amount in the vial more than 35% off the label
PT-141 · May 21, 2025
purity under 99.5%; amount in the vial more than 35% off the label
Melanotan II · May 20, 2025
purity under 99.5%
BPC-157 · May 20, 2025
purity under 99.5%
BPC-157 · May 20, 2025
purity under 99.5%
BPC-157 · May 16, 2025
purity under 99.5%
Lab testing results
Independent results across 4 products.
Individual lab tests
Date
7/10/2025
Purity
99.91%
Quantity
150 mg → 122 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / Black Cap
Date
7/10/2025
Purity
99.72%
Quantity
150 mg → 110 mg
Lab
Krause Analytical
Vial
White Label / Silver Crimp / Black Cap
Date
5/21/2025
Purity
99.44%
Quantity
8 mg → 11.25 mg
Lab
Janoshik
Vial
White Label / Silver Crimp / Black Cap
Date
5/21/2025
Purity
99.551%
Quantity
8 mg → 11.39 mg
Lab
Janoshik
Vial
White Label / Silver Crimp / Black Cap
Date
5/20/2025
Purity
99.297%
Quantity
6 mg → 6.54 mg
Lab
Janoshik
Vial
White Label / Silver Crimp / Black Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| GHK-CuWhite Label / Silver Crimp / Black Cap | 7/10/2025 | 10.0 | 99.91% | 150 mg → 122 mg | Krause Analytical | View |
| GHK-CuWhite Label / Silver Crimp / Black Cap | 7/10/2025 | 10.0 | 99.72% | 150 mg → 110 mg | Krause Analytical | View |
| PT-141White Label / Silver Crimp / Black Cap | 5/21/2025 | 9.9 | 99.44% | 8 mg → 11.25 mg | Janoshik | View |
| PT-141White Label / Silver Crimp / Black Cap | 5/21/2025 | 10.0 | 99.551% | 8 mg → 11.39 mg | Janoshik | View |
| BPC-157White Label / Silver Crimp / Black Cap | 5/20/2025 | 9.9 | 99.297% | 6 mg → 6.54 mg | Janoshik | View |
Which Science products tested best
GHK-Cu has the strongest record, graded A or B.
Melanotan II graded D or E: a large share of its samples missed purity or quantity thresholds.
Buying from Science
If you order from Science, 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 Science's prices yet. Shipping, payment and refund terms are on their site.
The official store is science.bio. 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 Science
Create a free account to save this vendor, get alerts for new lab tests, and watch price changes.
Science: common questions
Is Science legit?
We rate lab records, not businesses. Mixed lab record: 12 independent tests, 7 of 12 lots filled to label, median purity 99.47%, 1 of 2 products graded D or E. Each result links to its original certificate in the table above.
What do Science reviews say?
We don't hold scored customer reviews for Science yet. The independent lab results on this page are the evidence we have.
Which Science peptides tested best?
We have graded 2 Science products. GHK-Cu graded A or B. Melanotan II graded D or E.
Is there a Science coupon code?
We don't have a verified Science coupon code. A discount changes the price, not what is in the vial.
Where does Science ship from?
Public listings place Science's shipping origin in United States. Check the shop's own shipping page before ordering, as origin can change.
Ordering from Science?
Mixed lab record: 12 independent tests, 7 of 12 lots filled to label, median purity 99.47%, 1 of 2 products graded D or E.