| Abbreviation | Definition |
|---|---|
| UPJ | Uretero-Pelvic Junction |
| UPN | Unified Physicians Network |
| UPN | Unversity Physicians Network |
| UPNC | United Physicians of Northern Colorado |
| UPOR | Usual place of residence |
| UPQC | Utah Physicians Quality Care |
| UPT | Urine Pregnancy Test |
| UPV | Ultrasonic Pulse Velocity |
| UQ | Upper quadrant |
| UQS | Unidimensional Quantification Syndrome |
| UQYBT | Upper Quarter Y-Balance Test |
| UR | Unconditioned response |
| UR | Upper Respiratory |
| UR | Upper Right |
| UR | Urine |
| URAP | Unidirectional Retrograde Accessory Pathway |
| URD | Unit Release Dose |
| URD | Upper respiratory disease |
| URG | Urgent |
| URI | Upper Respiratory Infection |