| ACT | achievement through counseling and treatment; actin; actinomycin; activated clotting time; advanced ... |
|---|---|
| AcT | acceleration time |
| AHT | aggregation half time; antihyaluronidase titer; augmented histamine test; autogenous hamster tumor |
| APTI | airway pressure time index |
| APTT, aPTT | activated partial thromboplastin time |