| AHSR | Association for Health Services Research |
|---|---|
| AIS/MR | Alternative Intermediate Services for the Mentally Retarded |
| AL | absolute latency; acinar lumen; acute leukemia; adaptation level; albumin; alcoholism [and other dru... |
| ASMPA | Armed Services Medical Procurement Agency |
| ASO | administrative services only; allele-specific oligonucleoside; antistreptolysin O; arteriosclerosis ... |