| uPAR | urokinase type plasminogen activator |
|---|---|
| UPD | Uniparental disomy |
| UPDRS | Unified Parkinson Disease Rating Scale |
| UPE | Urinary protein excretion |
| UPJ | Ureteropelvic junction |
| UPJO | Ureteropelvic Junction Obstruction |
| UPP | Urethral pressure profile |
| UPP | Urethral pressure profilometry |
| UPPP | Uvulo-palato-pharyngo-plasty |
| UPR | Unfolded Protein Response |