| Component | Function | |-----------|----------| | Dose knob | Sets to 1 mg (only fixed dose; no half-markings) | | Injection button | Recessed design to prevent accidental activation | | Scale drum | Shows number of doses remaining (4 → 3 → 2 → 1 → 0) | | Pressure spring | Reduces thumb force required for injection | | Glass cartridge | Within plastic housing; rubber piston | | Flow-check symbol | Drop icon to confirm needle patency before first use |
| Dose setting | Mean delivered (mg) | CV (%) | Pass/Fail (5% tolerance) | |--------------|--------------------|--------|---------------------------| | 1.0 mg | 0.97–1.03 | <3.5 | Pass | | 0.25 mg (prime) | 0.23–0.27 | <5.0 | N/A (not therapeutic) | ozempic 1 mg pen