| IMHT | indirect microhemagglutination test |
|---|---|
| ind | indirect; induction |
| IRIA | indirect radioimmunoassay |
| SNRTi | sinus node recovery time, indirect measuring |
| IFI | indirect immunofluorescence |
|---|---|
| IIF | indirect immunofluorescence assay |
| IIF | indirect immunofluorescence technique |