| IADH | inappropriate antidiuretic hormone |
|---|---|
| IADHS | inappropriate antidiuretic hormone syndrome |
| ID | identification; iditol dehydrogenase; immunodeficiency; immunodiffusion; immunoglobulin deficiency; ... |
| IST | inappropriate sinus tachycardia; insulin sensitivity test; insulin shock therapy; International Soci... |
| PS test | Pancreozymin-Secretion test = combined secretin-CCK test |