- salicylate
- Salicylate intoxication
- Saline, excessive infusion
- Salivary glstudies
- Saponification
- Sarcoidosis
- Sarcoma
- Scarlet fever
- Scheie's classification
- Schirmer Tear Test
- Schistocyte
- Schistosomiasis
- Schizophrenia
- Schwabach test
- Scl-70 antibody
- Scleroderma
- Sclerosing cholangitis
- Scoliosis
- Scrotal sonography
- Scurvy
- Sedative
- Sedentary lifestyle
- Sed rate
- See table
- Seizure disorder
- Semen Analysis
- Sepsis
- Septal defect
- Septicemia
- Septic shock
- Serenace
- Serum gamma-glutamyltransferase
- Serum glutamic-oxaloacetic transaminase
- Serum glutamic pyruvic transaminase (SGPT)
- Serum K+
- Serum Na+
- Sestamibi scan
- SGGT
- SGOT
- Shaffer's classification
- Shellfish allergy
- Shift to the left
- Shift to the right
- Shingles
- Shock
- shoulder
- Shunt
- Sialography
- Sickle cell anemia
- Sickle Cell Screen
- Sickle cell test
- Sideroblastic anemia
- Siderophilin
- sigmoidoscopy (sigmoid colon)
- Silapap
- Sildenafil (Viagra)
- Simplate bleeding time
- Sinequan
- Single-energy x-ray absorptiometry (SXA)
- Single-photon emission computed tomography (SPECT)
- Sinuses
- Sjogren's syndrome
- Skin
- Skin disease
- Skin infection
- SK-Pramine
- Sleep
- Sleep apnea
- Slit-Lamp Biomicroscopy
- Slit-lamp examination
- Small airway disease
- Small bowel
- Small bowel resection
- small bowel study
- Small bowel tumor
- Smith [Sm]
- Smoking
- Sodium, Blood
- Sodium, Urine
- Sodium. See also Hypernatremia; Hyponatremia
- Soft tissue
- Soft-tissue mass
- Solfoton
- Somatotropic hormone
- somatotropin
- Spasm
- Specimen
- Spectro-Genta
- speech reception threshold
- SPEP
- Spherocyte
- Spherocytosis
- Spinal fracture
- Spinal stenosis
- Spine
- spine) MRI
- spine CT
- spine x-rays
- Spleen
- spleen scan
- Spleen ultrasonography
- Splenectomy
- splenic CT
- Splenic laceration
- Splenomegaly
- Spondee Speech Recognition Threshold
- Spondylitis, ankylosing rheumatoid
- Spondylosis
- Spontaneous abortion, AFP levels in
- SprueCeliac disease; Tropical sprue
- Sputum
- Squamous cell
- Squamous cell carcinoma
- SRT
- ß2-Microglobulin, Blood and Urine
- SS-A/Ro
- SS-B/La
- standard gestational screen
- standard gestational tolerance test
- Standard gestational tolerance test
- Standard oral tolerance test
- Standard precautions
- Staphylococcus
- Starvation. See also Malnutrition
- Stature
- Steatorrhea
- Stein-Leventhal syndrome
- Stenosis
- Stental Extentabs
- Stent placement
- Stereotactic Biopsy, Breast
- Sterility
- Steroid therapy
- Stimulants
- Stomach. See also Gastric entries
- stomach series
- Stomatocyte
- Stool fat
- Strep screen
- Streptococcus, group B, culture for
- Streptococcus pneumoniae
- streptodornase
- Streptozyme
- Stress
- stress testing
- Stress testing
- stress thallium
- Stricture
- Subacute endocarditis
- Subaortic stenosis
- Subphrenic abscess
- β-subunit HCG
- Succinylcholine hypersensitivity
- Sulfate
- Superficial venous thrombosis, ultrasonography for
- Suppository
- Suprapubic aspiration
- Surgery
- Surgicutt bleeding time
- Suxinutin
- swallowing function
- sweat chloride
- Sweating
- Sweat test
- SXA
- Synalgos
- Syndrome of inappropriate ADH secretion (SIADH)
- Syndrome X
- Synovial Fluid Analysis
- Synovial tumor, arthrogram for
- Synovitis
- Syphilis
- Syphilis Serology
- Systemic lupus erythematosus (SLE)