| UP | Unipolar |
|---|---|
| UP | Universal Precautions |
| UP | Urticaria pigmentosa |
| UP | uroporphyrin |
| UP-SIT | University of Pennsylvania Smell Identification Test |
| UPA | Underprivileged Area |
| UPAR | UPA receptor |
| uPAR | Urokinase receptor |
| uPAR | Urokinase type plasminogen activator receptor |
| uPAR | Urokinase-type plasminogen activator and its receptor |