| 19844-0 | Functional residual capacity (helium rebreathing) |
| 19849-9 | Inspiratory capacity (helium rebreathing) |
| 19857-2 | Total lung capacity (helium rebreathing) |
| 19863-0 | Vital capacity Respiratory system (helium rebreathing) |
| 19921-6 | Expiratory reserve (helium rebreathing) |
| 20143-4 | Residual volume (helium rebreathing) |
| 82617-2 | Total lung capacity (helium rebreathing --pre bronchodilation) |
| 82618-0 | Total lung capacity (helium rebreathing --post bronchodilation) |