What we test, and how the results reach you
Every lot is characterized before it is listed. Nothing is sold on the strength of a supplier claim alone.
Each lot is run by reversed-phase high-performance liquid chromatography. The purity figure is the peak-area percentage of the target compound against total integrated area.
Molecular identity is confirmed by mass spectrometry, matching the observed mass against the expected molar mass of the sequence.
Vial fill is confirmed by weight against the labeled amount, so the stated milligram content reflects what is in the vial.
One certificate of analysis per lot
Results are tied to the lot number printed on the vial, not to the product in general. When a new batch is produced it is tested, assigned a lot number, and its certificate of analysis is published to the product page. The lot you receive matches the certificate you can read, down to the number on the label.
| Lot | Compound | Purity, HPLC | Identity, MS | Fill | Tested |
|---|---|---|---|---|---|
| RB-4417 | BPC-157 | 99.4% | Confirmed | 5.00 mg | 2025-02-11 |
| RB-8302 | Tirzepatide | 99.7% | Confirmed | 5.00 mg | 2025-04-14 |
| RB-0994 | GHK-Cu | 99.3% | Confirmed | 50.0 mg | 2025-02-18 |
Figures shown are representative mock data for a placeholder catalog.