| IPAT | Institute of Personality and Ability Testing; Iowa Pressure Articulation Test |
|---|---|
| ISTU | isometric strength testing unit |
| ITC | imidazolyl-thioguanine chemotherapy; Interagency Testing Committee; in the canal [hearing aid] |
| MHTS | Multiphasic Health Testing Services |
| NDT | neurodevelopmental treatment; noise detection threshold; nondestructive test, nondestructive testing... |