| AITT | arginine insulin tolerance test; augmented insulin tolerance test |
|---|---|
| ATT | arginine tolerance test; aspirin tolerance time |
| ETT | endotracheal tube; epinephrine tolerance test; exercise tolerance test; exercise treadmill test; ext... |
| LTT | lactose tolerance test; leucine tolerance test; limited treadmill test; lymphocyte transformation te... |
| HEIR | health effects of ionizing radiation; high-energy ionizing radiation |