| FID | flame ionization detector; free induction decay; fungal immunodiffusion |
|---|---|
| ID | identification; iditol dehydrogenase; immunodeficiency; immunodiffusion; immunoglobulin deficiency; ... |
| IDP | immunodiffusion procedure; inflammatory demyelinating neuropathy; initial dose period; inosine dipho... |
| RID | radial immunodiffusion; remission-inducing drug; ruptured intervertebral disc |
| SRID | single radial immunodiffusion |