| GPS | Goodpasture syndrome; gray platelet syndrome; guinea pig serum; guinea pig spleen |
|---|---|
| HDPAA | heparin-dependent platelet-associated antibody |
| HELLP | hemolysis, elevated liver enzymes, and low platelet count [syndrome] |
| HGPS | hereditary giant platelet syndrome; Hutchinson-Gilford progeria syndrome |
| HIPA | heparin-induced platelet activation |