| HAREM | heparin assay rapid easy method |
|---|---|
| HARM | heparin assay rapid method |
| HART | Heparin-Aspirin Reinfarction Trial [not to be confused with HAART |
| HAT | Halsted Aphasia Test; head, arm, trunk; heparin-associated thrombocytopenia; heterophil antibody tit... |
| HATT | heparin-associated thrombocytopenia and thrombosis |