| HAGG | heat aggregated IgG |
|---|---|
| HAH | Halogenated aromatic hydrocarbons |
| HAI | Haemagglutination Inhibition |
| HAI | Hepatic Artery Infusion |
| HAI | Hepatic arterial infusion |
| HAI | Histological Activity Index |
| HAI | Histology Activity Index |
| HAI | Hospital Acquired Infections |
| HAI | haemagglutination inhibiting |
| HAI | haemagglutination inhibition test |