| BLT | bleeding time; blood-clot lysis time; blood test |
|---|---|
| BlT | bleeding time; blood test; blood type, blood typing |
| Blx | bleeding time |
| BT | base of tongue; bedtime; bitemporal; bitrochanteric; bladder tumor; Blalock-Taussig [shunt]; bleedin... |
| BTB | breakthrough bleeding; bromthymol blue |