How we test
Finished supplements are extracted and run by HPLC with UV or mass spectrometry detection. We identify each active ingredient and measure how much is there.
For multi-ingredient products, each component gets its own line on the certificate. If you send the label, we compare the result with the label claim.
What we measure
| Identity | Retention time and spectrum or accurate mass |
|---|---|
| Potency | Quantitative HPLC-UV or HPLC-MS against reference standards |
| Forms | Tablets, capsules, liquids, powders and strips |
| Report | Result for each component, with units and method |
What is on the certificate
- Each active ingredient with the amount found
- Comparison with the label claim, if supplied
- Method and test date
- Certificate Number and QR code
What to send
- Finished product in its original or a sealed package
- The label or a list of actives and stated amounts
- Batch or lot number
Please wait for our packing instructions before you ship. They confirm amounts, container, temperature and where to send the samples.
Independence. Global Pure Laboratory is an independent testing lab. We do not make, source or sell the compounds we test, and we do not endorse any of them.
Research use only. For research use only. Not for human or animal use, or for use as a drug, food, device or cosmetic.