| UCAD | Unstable coronary artery disease |
|---|---|
| UcAMP | Urinary cAMP |
| UCB | Umbilical cord blood |
| UCB | Unconjugated bilirubin |
| UCL | Ulnar collateral ligament |
| UCLA | University of California Los Angeles |
| UCLA | University of California at Los Angeles |
| UCLP | Unilateral Cleft Lip and Palate |
| UCN | Urocortin |
| UCNT | Undifferentiated carcinoma of nasopharyngeal type |