| L1, L2, and so on |
first lumbar vertebra, second and so on lumbar vertebra, and so on |
| LA |
Left atrium |
| LASIK |
Laser-assisted in situ keratomileusis |
| LAT, Lat |
Lateral |
| LBBB |
Left Bundle Branch Block |
| LBW |
Low Birth Weight |
| LD |
Lactate Dehydrogenase; lactic acid dehydrogenase (cardiac enzyme) |
| LDL |
Low-density lipoprotein |
| LES |
Lower esophageal sphincter |
| LFT |
Liver Function Test |
| LH |
Luteinizing Hormone |
| LLQ |
Left Lower Quadrant |
| LMP |
Last Menstrual Period |
| LOC |
Loss Of Consciousness |
| LP |
Lumbar Puncture |
| LPR |
Laryngo Pharyngeal Reflux |
| LS |
Lumbosacral Spine |
| LSO |
Left salpingo-oophorectomy |
| lt |
Left |
| LUQ |
Left upper quadrant |
| LV |
Left ventricle |
| lymphos |
Lymphocytes |
