Third-party lab testing: 37 independent Janoshik assays on file, covering 30 substances, median measured purity 99.6%, most recent test 2026-03-27.
Finnrick, an independent testing programme, publishes 9 assays for Cocer Peptides: 5 met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation) and 4 did not. Most recent assay 16 Jun 2026.
Cocer Peptides operates from China, listed by Finnrick as "Trading". Source: Finnrick, https://www.finnrick.com/vendors/cocer-peptides.
Cocer Peptides sells direct to researchers and operates from Hong Kong.
In its own words: “Trusted Supplier of 99% Purity Retatrutid, Tirzepatid, Semaglutid & Peptides for Weight Loss - Cocer Peptides Co., Ltd.”
Cocer Peptides publishes 20 certificates of analysis on its site, all credited to Janoshik Analytical. The vendor chose which batches to publish, so those results do not tell you what is in the vial you receive. It advertises purity of ≥99%.
Payment is by cryptocurrency and credit card.
Worth knowing before you order: consumer email only. Every contact address is a free consumer mailbox ([email protected], [email protected]) rather than an address on the company's own domain. There is no registered business identity behind the contact route.
Site check: 20 certificates of analysis published; payment by cryptocurrency, credit card; operates from Hong Kong.
Cocer Peptides is listed as active.
| Substance | Measured purity | Test date |
|---|---|---|
| Tb 500 Farg 10mg | 99.90% | 2026-03-27 |
| Reta10mg | 99.73% | 2026-03-18 |
| Bpc 10mg | 99.79% | 2026-03-18 |
| Motsc 10mg | 99.44% | 2026-03-18 |
| AOD 5mg | 99.08% | 2026-02-20 |
| Tirzepatide 10mg | 99.69% | 2026-02-10 |
| Retatrutide 10mg | 99.41% | 2026-02-05 |
| Tb500 10mg | 99.33% | 2026-01-19 |
| Tesamorelin 10mg | 99.70% | 2026-01-19 |
| Kisspeptin 10mg | 99.69% | 2026-01-19 |
| Glow | not reported | 2026-03-27 |
| Tb/bp 30/30 | not reported | 2026-03-27 |
10 of these 12 assays report a measured purity figure. The other 2 confirm the substance was submitted and tested but carry no purity number on the certificate, which is not the same as a failed result.
All 37 lab tests for Cocer Peptides
| Product | Assays | Result |
|---|---|---|
| Retatrutide | 5 | 3 passed, 2 failed |
| Tesamorelin | 4 | 2 passed, 2 failed |
Source: Finnrick, as published 2026-08-09. Pass and fail are Finnrick's classification against its own threshold, not ours.
| Status | Active |
|---|---|
| Independent assays on file | 37 |
| Median measured purity | 99.6% |
| Vendor type | Research-use supplier |
This vendor advertises ≥99%. Across 37 independent Janoshik assays of its products, median measured purity is 99.6%, most recently 2026-03-27.
These details were read from Cocer Peptides's own website on 2026-08-10. Pages consulted:
Cocer Peptides is listed as active and we hold 37 independent Janoshik assays on file, median measured purity 99.6%; 9 Finnrick assays (5 passing, 4 failing its purity threshold); 20 certificates of analysis published on its own site. That is evidence about the batches that were tested or published, not a guarantee about the vial you receive.
Yes. We hold 37 third-party Janoshik assays for Cocer Peptides, covering 30 substances, with a median measured purity of 99.6%. The most recent is dated 2026-03-27. Finnrick, an independent testing programme, publishes 9 assays for Cocer Peptides: 5 met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation) and 4 did not. Most recent assay 16 Jun 2026.
Cocer Peptides accepts Cryptocurrency, Credit Card.
Cocer Peptides ships from Hong Kong.
Tested substances: Glow, Tirzepatide 10mg, Retatrutide 10mg, Tesamorelin 10mg, Kisspeptin 10mg, Tirzepatide 30mg, Bpc-157 20mg, Lpamorelin 10mg, Epithalon 10mg, KPV 10mg, Tirzepatide 20mg, Retatrutide 30mg.
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Popular peptides: Semaglutide, Tirzepatide, Retatrutide, BPC-157, CJC-1295, Ipamorelin.
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