| UCL | ulnar collateral ligament; upper collateral ligament; upper confidence limit; upper control limit; u... |
|---|---|
| LU | left upper [limb]; loudness unit; Lupron; lytic unit |
| LUSB | left upper scapular border; left upper sternal border |
| UA | absorption unsharpness; ultra-audible; ultrasonic arteriography; umbilical artery; unauthorized abse... |
| UE | uncertain etiology; under elbow; uninvolved epidermis; upper esophagus; upper extremity |