Testing laboratory
Janoshik Analytical
Janoshik Analytical signed 5 of the certificates behind these rankings, covering 2 vendors and 5 compounds, at a mean reported purity of 99.68%. It publishes a public lookup, so a report can be pulled from the laboratory rather than taken from the vendor.
5 certificates · 2 vendors · 5 compounds · assays 18 Mar 2025 to 17 Mar 2026
Looking a report up yourself
Janoshik reports carry a task number and an access key. Both appear on the certificate and are entered together on the laboratory’s own results page.
Open the Janoshik Analytical lookup
A laboratory lookup answers for the sample the laboratory received. It confirms that a report exists and what it says. It does not confirm that the vial in your hand came from that lot, which is why the lot number on the vial has to match the certificate.
Vendors using this laboratory
| Vendor | Certificates from this lab |
|---|---|
| Hydro Research Peptides | 4 |
| Licensed Peptides | 1 |
Across these certificates the median gap between labelled and assayed mass is 13.2%. That figure describes what the laboratory reported about the samples it received; it is a property of those samples, not a rating of the laboratory.
Certificates
| Assayed | Compound | Vendor | Lot | Purity | Label → assayed |
|---|---|---|---|---|---|
| 17 Mar 2026 | Tirzepatide | Hydro Research Peptides | HRP-26784 | 99.655% | 15 mg → 17.34 mg |
| 9 Oct 2025 | BPC-157 | Licensed Peptides | RETA10100926G | 99.896% | 10 mg → 11.32 mg |
| 30 Jul 2025 | Retatrutide | Hydro Research Peptides | HY-R40-MN0724 | 99.834% | 47.61 mg → 47.61 mg |
| 28 Apr 2025 | DSIP | Hydro Research Peptides | DS-Z29TRQ | 99.867% | 5.33 mg → 5.33 mg |
| 18 Mar 2025 | Semaglutide | Hydro Research Peptides | SEM5-002 | 99.145% | 5 mg → 5.94 mg |