| AHT | aggregation half time; antihyaluronidase titer; augmented histamine test; autogenous hamster tumor |
|---|---|
| AHTG | antihuman thymocyte globulin |
| AHTP | antihuman thymocyte plasma |
| AHTS | antihuman thymus serum |
| AHU | acute hemolytic uremic [syndrome]; arginine, hypoxanthine, and uracil |
| AHuG | aggregated human IgG |
| AHV | avian herpes virus |