| UP | Uremic Pericarditis |
|---|---|
| UP | parallax unsharpness; ulcerative proctitis; ultrahigh purity; unipolar; upright posture; ureteropelvic; uridine phosphorylase; uroporphyrin |
| UPase | uridine phosphorylase |
| UPD | urinary production |
| UPDRS | unified Parkinson disease rating scale |
| UPEP | urinary protein electrophoresis; urine protein electrophoresis |
| UPET | urokinase pulmonary embolism trial |
| UPF | universal proximal femur [prosthesis] |
| UPG | uroporphyrinogen |
| UPGMA | unweighted pair group method with averages |