Lab records by peptide
Glutathione vendors
Vendors that sell Glutathione, ranked by what independent labs found in their vials: 7 tests across 4 shops since June 2026. No shop has graded A or B for Glutathione yet.
- 17%of vials held more than 5% less Glutathione than the label
- Most common failureamount in the vial more than 35% off the label (1 test)
- Last 90 days6 tests from 4 shops, 1 failed. Newest result Sep 17, 2026.
Glutathione vendors ranked by lab record
The grade is for Glutathione only, not the shop's whole catalog. A shop can pass on one peptide and fail on another. Shops with the same grade are ordered by number of tests.
| Vendor | Grade | Tests | Passed | Median purity | Under-filled | Last test |
|---|---|---|---|---|---|---|
| Shanghai ERP peptide BiotechnologyLast failure Aug 9, 2026: amount in the vial more than 35% off the label | E | 3 | 1/2 | 99.80% | 0/2 | Aug 9, 2026 |
| Heman Peptide HMLast failure Jun 16, 2026: purity under 99.5% | E | 2 | 1/2 | 98.20% | 1/2 | Jul 14, 2026 |
| Above All Peptides | – | 1 | – | 98.10% | 0/1 | Sep 17, 2026 |
| VoriLabs | – | 1 | – | 99.70% | 0/1 | Jul 10, 2026 |
Recent failed Glutathione tests
The newest results that failed, with the reason and the lab's certificate. Check whether your batch number matches before you trust a shop's own paperwork.
- Shanghai ERP peptide BiotechnologyAug 9, 2026 · BTLabsamount in the vial more than 35% off the label · purity 99.70% · fill +39.0% · Certificate
- Heman Peptide HMJun 16, 2026 · Krause Analyticalpurity under 99.5% · purity 96.50% · fill -10.0% · Certificate
Before you order Glutathione
- Look at the shop's grade for Glutathione, not its average. Shanghai ERP peptide Biotechnology has the most Glutathione tests (3); a shop with one or two tests has not shown it is consistent.
- 100% of these vials were bought and sent in by customers; the rest were sent by Finnrick or by the shop itself. Results from vials a shop chose to send are the weakest evidence.
- 2 labs tested them, mostly Krause Analytical and BTLabs. Ask for the certificate for your batch and check it on the lab's own site.
- Run the vendor checklist before paying, and read how the grades work.
Research peptides are sold for laboratory use only. This page reports lab results; it is not medical advice.