| GGA | general gonadotropic activity |
|---|---|
| GM-CSA | granulocyte-macrophage colony-stimulating activity |
| HAA | hearing aid amplifier; hemolytic anemia antigen; hepatitis-associated antigen; hospital activity ana... |
| HNA | heparin neutralizing activity |
| HRA | health record analyst; health risk appraisal; heart rate audiometry; hereditary renal adysplasia; hi... |