| IUB | International Union of Biochemistry |
|---|---|
| biochem | biochemistry, biochemical |
| ICD | I-cell disease; immune complex disease; implantable cardioverter defibrillator; impulse-control diso... |
| IPA | immunoperoxidase assay; incontinentia pigmenti achromians; independent physician or practice associa... |
| SI | System of International Units (Systeme International D'unites) |