Verify a Glutathione lot
Enter the lot number printed on your Glutathione Labs Glutathione vial to see that lot's certificate of analysis results: purity, identity, net content, test dates and the laboratory's reference numbers.
Published Glutathione lots
Every lot that can be verified on this page.
| Lot | Vial size | Net content | Purity (HPLC-UV) | Identity (LC-MS) | Endotoxin (LAL) | Microbial (PCR) | Reported | COA |
|---|---|---|---|---|---|---|---|---|
| KB9987 | 600 mg | 567.86 mg | 99.37% | Confirmed | Not tested | Not tested | View lot KB9987 | |
| KB9987 | 600 mg | 567.86 mg | 99.37% | Confirmed | Not tested | Not tested | View lot KB9987 |
Testing laboratory: Freedom Diagnostics. Release specification: purity ≥95% by HPLC-UV with identity confirmed by LC-MS. Results apply only to the lot listed. Certificates list the testing client as Klow.bio / Klow Labs LLC, the company that operates Glutathione Labs.
How to verify a certificate
- Find the lot number on your vial. It is printed on the label, for example KB9987.
- Look it up. Enter it at buyglutathionepeptide.com/verify, or open the matching lot in the COA archive.
- Check the lab's own record. Scan the Freedom Diagnostics QR code printed on the certificate, then search for klow.bio under the Company tab to view the laboratory record.
- Compare the details. Lot number, the laboratory’s reference numbers, purity and dates should match exactly.
What a certificate of analysis does and doesn't show
- A COA reports the identity, purity and content of the specific sample tested, on its test date. Results apply to that lot only.
- HPLC purity measures the main peak relative to other detected components. It does not identify the peak on its own; the separate identity test (LC-MS) does that.
- Mass confirmation matches molecular weight. It does not by itself confirm amino-acid order.
- Endotoxin and microbial results apply only where those tests appear on the certificate. Lots without them are marked "Not tested".
- A certificate does not establish stability after the test date or suitability for any particular purpose.