| DAST | drug abuse screening test; drug and alcohol screening test |
|---|---|
| HHIE-S | Hearing Handicap Inventory for the Elderly-Screening Version |
| HL | hairline; hairy leukoplakia; half life; hearing level; hearing loss; heparin lock; histiocytic lymph... |
| HT | Hashimoto thyroiditis; hearing test; hearing threshold; heart; heart transplantation, heart transpla... |
| HDN | Hemolytic Disease of Newborn |