| LBBsB | left bundle branch system block |
|---|---|
| LBC | lidocaine blood concentration; lymphadenosis benigna cutis |
| LBCD | left border of cardiac dullness |
| LBCF | Laboratory Branch complement fixation [test] |
| LBD | large bile duct; left border of dullness |
| LBF | Lactobacillus bulgaricus factor; limb blood flow; liver blood flow |
| lbf | pound force |
| lbf-ft | pound force foot |
| LBH | length, breadth, height |
| LBI | low back injury; low serum-bound iron |