| LR | low risk |
|---|---|
| LRAT | Lecithin retinol acyl transferase |
| LRC | Lipid Research Clinic |
| LRC | Loco-regional control |
| LRC-CPPT | Lipid Research Clinics Coronary Primary Prevention Trial |
| LRD | Limb reduction defects |
| LRD | Living related donor |
| LRD | Lysinated-Rodamine-Dextran |
| LRE | Leukemic reticuloendotheliosis |
| LRE | light-responsive element |