| UGT | Uridine diphospho-glucuronosyltransferase |
|---|---|
| UHDRS | Unified Huntington Disease Rating Scale |
| UHMWPE | Ultra high molecular weight polyethylene |
| UHT | Ultra high temperature |
| UI | Ulcer Index |
| UI | Unsaturation index |
| UI | Urinary incontinence |
| UI | Urinary iodone |
| UI | Urotensin I |
| UIBC | unsaturated iron binding capacity |