| UA | absorption unsharpness; ultra-audible; ultrasonic arteriography; umbilical artery; unauthorized absence; unit of analysis; unstable angina; upper airways; upper arm; uric acid; uridylic acid; urinalysis; urinary aldosterone; uronic acid; uterine aspiration |
|---|---|
| ua | urinalysis |
| UA/C | uric acid/creatinine [ratio] |
| UAC | umbilical artery catheter |
| UAE | unilateral absence of excretion; urine albumin excretion |
| UAEM | University Association for Emergency Medicine |
| UAI | uterine activity interval |
| UAN | uric acid nitrogen |
| UAO | upper airway obstruction |
| UAP | unlicensed assistive personnel; unstable angina pectoris; urinary acid phosphatase; urinary alkaline phosphatase |