L-glutathione COA — Verified Certificate of Analysis Results
21 independent third-party certificates of analysis for L-glutathione, from 5 labs across 11 vendors (2024-11-22 to 2026-11-08).
Every L-glutathione certificate of analysis below is from an independent third-party lab, ingested and verified by TitrateLab. The figures here are computed live from the 21 published L-glutathione certs in our corpus.
Assay metrics
L-glutathione lab-testing metrics
99.8%
Median tested purity
0
Zero-purity certs
Mean purity99.6%
Mean dose vs label+2.5%
Endotoxin pass67%
Within 10% of label dose100%
Overdosed ≥ +7%29%
Underdosed ≤ −7%0%
COAs per testing lab
Every lab testing L-glutathione in the corpus.
Tested-purity distribution
Bins below 90% tested purity.
| Purity range | Certificates |
|---|---|
| 0–50% | 0 |
| 50–70% | 0 |
| 70–80% | 0 |
| 80–85% | 0 |
| 85–90% | 0 |
| 90–91% | 0 |
| 91–92% | 0 |
| 92–93% | 0 |
| 93–94% | 0 |
| 94–95% | 0 |
| 95–96% | 0 |
| 96–97% | 0 |
| 97–98% | 0 |
| 98–99% | 2 |
| 99–100% | 19 |
COAs over time
L-glutathione certificates published per month.
| Month | Certificates |
|---|---|
| 2024-11 | 1 |
| 2024-12 | 1 |
| 2025-03 | 1 |
| 2025-06 | 2 |
| 2025-08 | 1 |
| 2025-10 | 2 |
| 2025-11 | 2 |
| 2025-12 | 3 |
| 2026-02 | 3 |
| 2026-03 | 2 |
| 2026-04 | 1 |
| 2026-05 | 1 |
| 2026-11 | 1 |
Most-tested vendors
Top 10 of 11 vendors by L-glutathione certificate count.
See who tests most — unlock the vendor names with Pro.
+ 1 more vendor with fewer certificates.
Verified L-glutathione certificates of analysis
21 records. Zero guesswork.
Unlock the actual vendor, purity, dose accuracy, lab, batch and saved certificate for every L-glutathione result.
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