| PSAD | prostate-specific antigen density |
|---|---|
| PSbetaG | pregnancy-specific beta-1-glycoprotein |
| PSBG | pregnancy-specific beta-1-glycoprotein |
| PSG | peak systolic gradient; phosphate, saline, and glucose; polysomnogram; presystolic gallop; pregnancy... |
| RSA | rabbit serum albumin; regular spiking activity; relative specific activity; relative standard accura... |