| UN | ulnar nerve; undernourished; unilateral neglect; urea nitrogen; urinary nitrogen |
|---|---|
| Ur | urea; urine, urinary |
| UU | urinary urea; urine urobilinogen |
| UUN | urinary urea nitrogen |
| UN | Urea nitrogen |
|---|---|
| UNA | Urea nitrogen appearance |
| UUN | Urinary urea nitrogen |
| BUN | urea nitrogen |