| TSU | triple sugar urea [agar] |
|---|---|
| UC | ulcerative colitis; ultracentrifugal; umbilical cord; unchanged; unclassifiable; unconscious; undiff... |
| UCE | urea cycle enzymopathy |
| UCL | ulnar collateral ligament; upper collateral ligament; upper confidence limit; upper control limit; u... |
| UFFI | urea formaldehyde foam insulation |