Lab reports
L-Glutathione lab reports
Every batch of L-Glutathionewe’ve released, tested by an outside lab before it went on sale. The one shipping now is lot GTT1500-WM2607-001: 99.31% pure by HPLC, tested by Accurate Lab Tests on 20 AUG 2026. The signed report is below — read it before you buy, not after.
The batch shipping now
- Lot number
- GTT1500-WM2607-001
- Product
- Glutathione 1500mg
- Purity (HPLC)
- 99.31%
- Tested by
- Accurate Lab Tests
- Tested on
- 20 AUG 2026
- Net peptide content
- 1506.82 mg
Contaminant screens
This report covers identity, purity and content. Screens the lab didn’t run aren’t listed — we never pad a certificate.
Every L-Glutathionebatch we’ve released
Anyone can show you one good report. Here are all 3, newest first, each with its own signed certificate. Nothing hidden, nothing cherry-picked.
Glutathione 1500mg
| Batch | Purity (HPLC) | Tested by | Tested on | Report |
|---|---|---|---|---|
| GTT1500-WM2607-001Latest | 99.31% | Accurate Lab Tests | 20 AUG 2026 | Signed PDF |
| CPE57R | 99.40% | Freedom Diagnostics | 17 AUG 2026 | Signed PDF |
| GLUT-052026-2 | 99.73% | Freedom Diagnostics | 21 MAY 2026 | Signed PDF |
How to read these numbers
The purity is the number the lab measured, not a floor. 99.31% means 99.31%, never “at least 99”. It comes from reversed-phase HPLC; identity is confirmed separately by mass spectrometry.
We don’t test our own product. Every lot goes to an independent, named lab — this one to Accurate Lab Tests. The certificate is published here before the buy button works, and the lot number on your vial is the one on the report.
If a batch misses its spec, it never ships. And if a vial you hold doesn’t match its report, test it at any lab you like and we refund every dollar. Holding a vial now? Look up its lot number in the registry.
What the published studies report about L-Glutathione — cited, numbered, and hedged to the evidence — is in Glutathione: Real Biochemistry, Contested Supplement.
The full walkthrough — matching the lot, reading the HPLC figure, confirming identity by mass spectrometry — is in How to Read a Peptide COA (and Spot a Bad One).
For research use only. Not for human or veterinary use. Not intended to diagnose, treat, cure, or prevent any disease. Sold and handled strictly as a laboratory research chemical; by purchasing you confirm you are a qualified researcher.