Glutathione × Optima Chemical Supply Inc. — Lab Test, November 2025
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.
Test results
This is a purity and identity analysis. Sterility, endotoxins, and heavy metals were not screened — a high purity figure says nothing about those.
About this test
Independent HPLC purity analysis of Glutathione from Optima Chemical Supply Inc., performed by Janoshik Labs on November 20, 2025. Reported purity: 99.208%. Net content: 1689.04 mg against 1500 mg labeled (113% of label). Tested content exceeds the labeled amount by 13%. Sample source: shop-provided. Certificate of analysis attached.
Certificate of analysis
Have you tested this peptide?
Submit your third-party lab test to help the community verify purity claims. Every report is reviewed before publication.
Community discussion