Davis's Lab & Diagnostic Tests
- Saccharomyces cerevisiae, immunoglobulin A (IgA)
- Saccharopolyspora rectivirgula
- Sacroiliitis, human leukocyte antigen B27
- Salicylate, drug monitoring, therapeutic
- Salivary cortisol, cortisol studies: blood, saliva, urine
- Salmonella spp., gram stains
- Salpingitis, laparoscopy of
- Sandhoff disease, hexosaminidase testing
- Saxagliptin
- Scalp pH
- Scheie classification
- Schiller test, cervical biopsy
- Schirmer Tear Test
- Schistocytes
- Schistosoma haematobium infection
- Schistosoma japonicum infection
- Schistosoma mansoni infection
- Schizophrenia, positron emission tomography of
- Schizotypal personality disorders, homovanillic acid and vanillylmandelic acid
- Schwabach test
- Schwartz syndrome, gonioscopy
- Sciatica
- Scleritis, slit-lamp biomicroscopy of
- Scrotal hernia, ultrasound of
- Scrotum, ultrasound studies of
- Seborrheic keratosis, skin biopsy
- Secondary fibrinolysis
- Secondary glaucoma, intraocular pressure (IOP)
- Secondary or angle-closure glaucoma
- Sed rate
- Seizure disorders, electroencephalography
- Semaglutide
- Sentinel lymph node (SLN)
- Septic arthritis
- Septin 9 DNA methylation
- Severe acute respiratory syndrome (SARS)-associated coronavirus
- Severe illness, cholesterol, total and fractions
- Sex chromosomes
- Sex-linked recessive (X chromosome) mutation
- Sexually transmitted infections, chlamydia testing
- Shaving biopsy
- Sheehan syndrome, prolactin levels in
- Sialography
- Sickle cell, bilirubin and bilirubin fractions in
- Sickle cell screen, hemoglobin electrophoresis and abnormal hemoglobins
- Sickle cell test
- Sigmoidoscopy
- Sigmoid torsion, barium enema in
- Sigmoid volvulus, barium enema in
- Signal averaged ECG
- Single-energy x-ray absorptiometry (SXA)
- Single-fiber electromyography
- Single-gene mutation
- Sinoatrial (SA) node
- Sinus endoscopy
- Sirolimus, drug monitoring, therapeutic
- Sitagliptin
- Skeletal x-rays
- Skin and soft tissue cultures, bacterial culture, various sites
- Skin Assessment for Infection, Hematoma, and Pressure Damage
- Skin biopsy
- Sleep apnea, electroencephalography
- Sleep disturbances, electroencephalography
- Slit-Lamp Biomicroscopy
- Smallpox
- Sodium, Blood and Sodium, Urine
- Soft tissue abnormalities, bone x-rays
- Soluble ST-2
- Somatomedins
- Somatosensory evoked response (SER)
- Somatostatin
- Somatotropic hormone
- Somatotropin
- Sonogram of heart
- Spasms, esophageal manometry
- Spermatocele, ultrasound of
- S-phase fraction (SPF)
- Spinal tap
- Spinal tumors, computed tomography (CT)
- Spine x-rays
- Spleen, computed tomography (CT)
- Splenic calcifications, ultrasound of
- Splenic cysts, computed tomography (CT)
- Splenic laceration, computed tomography (CT)
- Splenic trauma, ultrasound of
- Spneumoniae, cerebrospinal fluid analysis
- Spondee Speech Recognition Threshold
- Sporothrix schenckii, culture, fungal
- Sprue, folic acid
- Sprue (celiac disease), fecal analysis
- Squamous cell cancer, skin biopsy
- Standard gestational screen
- Standard gestational tolerance test
- Standard oral tolerance test
- Staphylococcal sepsis, complement, total, C3, and C4
- Staphylococcemia, cold agglutinin titer
- Staphylococcus aureus
- Staphylococcus aureus, bacterial culture, various sites
- Stenotic valvular disease, stress testing
- Stercobilin
- Stereotactic Biopsy, Breast
- Sterile fluid cultures, bacterial culture, various sites
- Sterility, vitamin A levels in
- Steroid-induced diabetes
- Stool evaluation and examination
- Stool fat
- Stool test, bacterial culture, various sites
- Storage disorders, iron studies
- Strep screen
- Strep throat, group A streptococcal (GAS) testing
- Streptococcal infections, antistreptococcal deoxyribonuclease-B antibody levels in
- Streptococcal sepsis, complement, total, C3, and C4
- Streptococcus pyogenes
- Streptococcus spp., gram stains
- Streptokinase, fibrinogen degradation products
- Stroke volume index (SVI), cardiac catheterization
- Strongyloides stercoralis infection
- Strongyloidiasis
- ST segment depression
- Stuart-Prower factor
- Subacute bacterial endocarditis, erythrocyte sedimentation rate
- Subacute sclerosing panencephalitis, cerebrospinal fluid analysis
- Subacute thyroiditis, radioactive iodine uptake
- Subaortic stenosis, echocardiography
- Subdural empyema, magnetic resonance imaging of
- Subjective visual disturbance, visual fields test for
- Subluxation, arthroscopy of
- Succinylcholine hypersensitivity, cholinesterases (CHS)
- Sweat chloride
- Sweat test
- Symptomatic porphyria, hexosaminidase testing
- Syndrome of androgen resistance, testosterone, total and free, in
- Synovial rupture, arthroscopy of
- Synovial tumor, arthrogram of
- Syphilis Testing
- Systemic lupus erythematosus (SLE)-like syndrome
- Systemic sclerosis, rheumatoid factor in