| Abbreviation | Definition |
|---|---|
| ITP | immune thrombocytopaenic purpura |
| ITP | individualised treatment plan |
| ITP | innovative training post |
| ITP | inosine triphosphate |
| ITP | intrathoracic pressure |
| ITP | intratracheal pressure |
| ITS | Independent Tribunal Service (abolished, now, the Appeals Service) |
| ITS | inferior temporal sulcus |
| ITS | Initial Tracing Service |
| ITS | insulin-transferrin-selenium |
| ITS | intertubercular sulcus |
| ITT | insulin tolerance test |
| ITT | interdisciplinary treatment team |
| ITT | intestinal transit time |
| IWLS | Improving Working Lives Standard |
| JACIEXX | Joint Accreditation Committee of the ISCT and the EBMT |
| JCAB | Joint Clinical Advisory Board |
| JCB | Joint Commissioning Board |
| JCB | Journal of Cell Biology |
| JCC | Joint Committee on Contraception |