| HSAP | heat-stable alkaline phosphatase |
|---|---|
| HSAS | hydrocephalus due to stenosis of aqueduct of Sylvius; hypertrophic subaortic stenosis |
| HSC | Hand-Schuller-Christian [syndrome]; Health and Safety Commission; health sciences center; health screening center; hematopoietic stem cell; human skin collagenase |
| HSCD | Hand-Schuller-Christian disease |
| HSCL | Hopkins Symptom Check List |
| HSCS | health state classification system |
| HSD | Hallervorden-Spatz disease; honestly significant difference; hydroxysteroid dehydrogenase; hypertonic saline and dextran |
| HSDB | hazardous substances data bank |
| HSDO | health services delivery organization |
| HSE | herpes simplex encephalitis; hemorrhagic shock and encephalopathy |