Janoshik Labs publishes a public verification portal. Any test attributed to this lab can be looked up and confirmed directly with the lab — so this result doesn't rest on our review alone.
This certificate carries no lookup code.
This is a purity and identity analysis. Sterility, endotoxins, and heavy metals were not screened — a high purity figure says nothing about those.
Label 20 mg · Lab measured 21.3 mg
107% of label, basis not stated — shown as printed. Reconstituted with 2 mL, a 50-unit draw holds 5.3 mg using the measured mass, against 5 mg on the label — 7% more.
One vial from this lot was weighed by the laboratory, not yours. This page reports what the certificate says; it does not recommend a dose.
Independent HPLC purity analysis of Semaglutide from Peptide Crafters, performed by Janoshik Labs on February 9, 2026. Reported purity: 99.735%. Net content: 21.3 mg against 20 mg labeled (107% of label). Batch PC-G3-S20. Sample source: shop-provided. Certificate of analysis attached.
| Lot | Tested | Lab | Purity | vs label | Status |
|---|---|---|---|---|---|
| PC-G4-S5 | 19 Mar 2026 | Janoshik Labs | 99.658% | 108% | Unverified |
| PC-G2-S10 | 27 Feb 2026 | Janoshik Labs | 99.67% | 104% | Unverified |
| PC-G3-S5 | 21 Jan 2026 | Vanguard Laboratory | 99.8% | 120% | Unverified |
| PC-G2-S20 | 19 Dec 2025 | Janoshik Labs | 99.814% | 101% | Unverified |
| PC-G2-S5 | 25 Nov 2025 | Janoshik Labs | 99.461% | 111% | Unverified |
| PC-G1-S10 | 20 Oct 2025 | Janoshik Labs | 99.211% | 108% | Unverified |
| PC-G1-S20 | 2 Oct 2025 | Janoshik Labs | 99.904% | 116% | Unverified |
| PC-G1-S5 | 12 Aug 2025 | Janoshik Labs | 99.687% | 104% | Unverified |
Batches this shop has published a certificate for, newest first. A lot whose printed value cannot identify a batch is not listed.
Submit your third-party lab test to help the community verify purity claims. Every report is reviewed before publication.
Community discussion