Is Peptide Sciences legit?
Finnrick scores Peptide Sciences 61% over 132 tests (fetched Sep 25, 2026). Finnrick lists peptidesciences.
On 6 Mar 2026, Peptide Sciences announced it stopped trading. Further purchases from this brand are fraudulent.source
Finnrick lab data
| Score | 61% Finnrick "Purity focus" |
|---|---|
| Rank | 293 of 345 vendors |
| Tests | 132, 79 passed and 53 failed of those Finnrick could classify |
| Latest test | Jul 20, 2026 |
| Location | US, NV |
| Status on Finnrick | Trading (Finnrick's note above says On 6 Mar 2026, Peptide Sciences announced it stopped trading) |
| Peptide tested | Tests | Score | Market median |
|---|---|---|---|
| Retatrutide | 41 | 56% | $1.50/mg |
| Tirzepatide | 17 | 68% | $0.63/mg |
| Semaglutide | 15 | 79.8% | $0.76/mg |
| BPC-157 | 13 | 59% | $4.35/mg |
| CJC-1295 | 11 | 18% | $3.92/mg |
| Melanotan II | 10 | 55% | $2.60/mg |
| Ipamorelin | 9 | 76% | $3.99/mg |
| GHK-Cu | 6 | 90% | $0.40/mg |
| PT-141 | 6 | 79.5% | $3.02/mg |
| Tesamorelin | 4 | 38% | $3.62/mg |
Source: Finnrick profile for Peptide Sciences, fetched Sep 25, 2026. Scores with few tests are pulled toward the middle. A score describes past samples, not the vial you will get. What a Finnrick score means.
Store facts as stated
| Store site | none linked; see the note above |
|---|---|
| Policies from | peptidesciences. |
| Site status | store closed the site still answers |
| What the site showed | Homepage says Peptide Sciences has voluntarily shut down and discontinued sales, and that any site claiming affiliation or successor status is unauthorized and fraudulent. |
Read from peptidesciences.com's pages on Sep 25, 2026: www.peptidesciences.com/. Blank means we couldn't confirm it, not that the store doesn't offer it.
Store domains
| Domain | Domain check | Status |
|---|---|---|
| peptidesciences. | vendor's own site | Closed |
Peptide Sciences' score applies only to its own sites. Another domain using the name may be a second site or an unrelated seller; each has its own page.
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