| As/Mk | antiserum, monkey |
|---|---|
| AS/Rab | antiserum, rabbit |
| ASA | acetylsalicylic acid; active systemic anaphylaxis; Adams-Stokes attack; American Society of Anesthesiologists; American Standards Association; American Surgical Association; aminosalicylic acid; anterior spinal artery; antibody to surface antigen; argininosuccinic acid; arylsulfatase-A; aspirin-sensitive asthma; asthma-nasal polyps-aspirin intolerance [triad] |
| ASA, A.S.A. | Acetyl-Salicylic Acid(= Aspirin) |
| ASAAD | American Society for the Advancement of Anesthesia in Dentistry |
| ASAB | Anti-Sperm Anti-Bodies |
| ASAC | acidified serum-acidified complement |
| ASAH | antibiotic sterilized aortic valve homograft |
| ASAHP | American Society of Allied Health Professions |
| ASAIO | American Society for Artificial Internal Organs |