| ALPL | alkaline phosphatase, liver |
|---|---|
| ALPP | alkaline phosphatase, placental |
| ALPPL | alkaline phosphatase-like, placental |
| ALPS | angiolymphoproliferative syndrome; Aphasia Language Performance Scale; attitudinal listening profile system |
| ALR | aldehyde reductase |
| ALRI | anterolateral rotatory instability |
| ALROS | American Laryngological, Rhinological, and Otological Society |
| ALS | Amyotrophic Lateral Sclerosis |
| ALS | acute lateral sclerosis; advanced life support; afferent loop syndrome; amyotrophic lateral sclerosis; angiotensin-like substance; anterolateral sclerosis; anticipated life span; antilymphocyte serum |
| ALS-PD | amyotrophic lateral sclerosis-parkinsonism-dementia [complex] |