| Abbreviation | Definition |
|---|---|
| ITCC | Information Technology Coordinating Committee |
| ITDS | International Trade Data System |
| ITF | Inspection Task Force |
| ITF | Inspection Task Force (CBER) |
| ITGS | Information Technology Governance Staff |
| ITGS(OC) | IT Governance Staff (OC) |
| ITIC | Information Technology Implementation Committee |
| ITIC | Information Technology Implementation Committee (CBER) |
| ITIPS | Information Technology Investment Portfolio System |
| ITMRA | Information Technology Management Reform Act |
| ITS | Information Technology Staff |
| ITS(CBER) | Information Technology Staff (CBER) |
| ITSO | Information Technology Services Office |
| ITT | Intent To Treat |
| ITTT | Information Technology Training Team |
| ITTT(OC) | IT Training Team (OC) |
| IUO | investigation use only |
| IUPAC | International Union of Pure and Applied Chemistry |
| IV | IntraVenous |
| IVC | Inferior Vena Cava |