| IFAT | indirect fluorescent antibody test |
|---|---|
| IFRA | indirect fluorescent rabies antibody [test] |
| IH | idiopathic hirsutism; idiopathic hypercalciuria; immediate hypersensitivity; incompletely healed; in... |
| IIF | immune interferon; indirect immunofluorescence |
| IMBC | indirect maximum breathing capacity |