| Abbreviation | Definition |
|---|---|
| UB9 | Urinary Bladder 9 acupuncture point |
| UBE | Upper Body Exercise |
| UBF | Uterine Blood Flow |
| UBQ | Ubiquitin mRNA |
| UBT | Urea Breath Test |
| UBT | Urinary Biological Tracimetry |
| UBV | Ultrasound Bone Velocity |
| UBW | Usual Body Weight |
| UBX | Ultrabithorax |
| UC | Ulcerative colitis |
| UC | Unassisted Childbirth |
| UC | Unchanged |
| UC | Un-Changed |
| UC | Unconscious |
| UC | Un-Conscious |
| UC | Uterine Contractions |
| UCCR | Urine Cortisol Creatinine Ratio |
| UCD | Urine Collection Device |
| UCD | Usual Childhood Diseases |
| UCG | Urinary chorionic gonadotrophin |