| SPAF | spontaneous paroxysmal atrial fibrillation |
|---|---|
| SPAG | small particle aerosol generator |
| SPAI | steroid protein activity index |
| SPAM | scanning photoacoustic microscopy |
| SPAMM | spatial modulation of magnetization |
| SPAR | sensitivity prediction by acoustic reflex |
| SPARC | cysteine-rich acidic secreted protein |
| SPAT | slow paroxysmal atrial tachycardia |
| SPB | sinking pre-beta-lipoprotein |
| SPBI | serum protein-bound iodine |