Guide to Diagnostic Tests
- SAAG (serum-ascites albumin gradient)
- Salicylate toxicity
- Salmonella
- Salpingitis
- Sarcoidosis
- SARS (severe acute respiratory syndrome)
- SARS-CoA (severe acute respiratory syndrome–coronavirus A)
- Selective serotonin reuptake inhibitors
- Sequential testing
- Serum-ascites albumin gradient
- Serum free light chains
- Serum protein electrophoresis
- Serum separator tube
- Severe acute respiratory syndrome
- Severe acute respiratory syndrome–coronavirus A
- Sézary syndrome
- SGOT (aspartate aminotransferase)
- SGPT (alanine aminotransferase)
- Shock
- Sideroblastic anemia
- Sigma metrics
- Sinus arrhythmia
- Sinusitis
- Sinus pauses
- SIRS (systemic inflammatory response syndrome)
- Sleep disturbance
- SLL (small lymphocytic leukemia)
- Small bowel follow-through
- Smooth muscle antibodies
- SMPD1 gene mutations
- SO2 (% saturation of hemoglobin)
- Sokolow-Lyon criteria LVH
- Somatostatin
- Somatostatinoma
- Specific gravity urine
- Spectrum bias
- Sperm chromatin structure assay
- Spinal tap traumatic
- Spine diagnostic imaging
- Spironolactone
- Spleen
- Splenic marginal zone lymphoma
- Sputum culture
- SSRIs (selective serotonin reuptake inhibitors)
- SST (serum separator tube)
- Starvation
- Statins
- StatStrip and Stat-Sensor systems
- Stenosis
- Steroidogenesis pathway
- sTfR (transferrin receptor soluble)
- Stool toxin assay in C. difficile-induced colitis
- Streptococcus pyogenes
- ST–T waves
- ST–U waves
- Subcutaneous panniculitis-like T-cell lymphoma
- Sudan stain
- Sulfasalazine
- Sulfonylureas
- Sustained junctional rhythm
- Sweat chloride test
- Swimmer's ear
- Systematic error
- Systemic inflammatory response syndrome
- Systemic vasculitis