| SPGX | spastic paraplegia, X-linked |
|---|---|
| SPH | secondary pulmonary hemosiderosis; severely and profoundly handicapped; spherocyte; spherocytosis; sphingomyelin |
| Sph | sphenoidale; sphingomyelin |
| sph | spherical; spherical lens; spheroid |
| SPI | Self-Perception Inventory; serum precipitable iodine; serum protein index; Shipley Personal Inventory; standardized-patient instructor |
| SPIA | solid-phase immunoabsorption; solid-phase immunoassay |
| SPICU | surgical pulmonary intensive care unit |
| SPID | summed pain intensity difference |
| SPIF | solid-phase immunoassay fluorescence |
| SPIH | superimposed pregnancy-induced hypertension |