Biomarkers: explore one system at a time

Showing 1041–1060 of 1204 results

• Sjögren's Syndrome A (SS-A/Ro) Antibody An autoantibody associated with Sjögren's syndrome and lupus; also relevant in pregnancy due to a risk of neonatal heart complications.
• Sjögren's Syndrome B (SS-B/La) Antibody An autoantibody associated with Sjögren's syndrome and lupus, often found alongside SS-A antibodies.
• SLCO1B1 Mutation Analysis Genetic test of the SLCO1B1 gene, which affects how your liver takes up statins, used to help predict the risk of statin-related muscle side effects.
• SLCO1B1 Phenotype Your predicted SLCO1B1 transporter function, based on your genotype, used to help guide statin choice and dosing decisions with your prescriber.
• Smad4 Genetic test of the SMAD4 gene, a tumor suppressor; harmful variants cause juvenile polyposis syndrome and raise the risk of digestive tract polyps and cancer.
• Small Dense LDLsdLDL Measures small dense LDL, a type of LDL cholesterol particle considered especially likely to contribute to artery plaque, adding detail to a lipid panel.
• Smith (Sm) Antibody An autoantibody highly specific for lupus, though present in only a portion of people with the disease.
• Sm/RNP Antibody Measures antibodies to the Sm/RNP complex, autoantibodies linked to mixed connective tissue disease and lupus, used when evaluating a positive ANA.
• Snail (f314) IgE Measures IgE antibodies to snail, a mollusk food allergen, to check whether your immune system is sensitized to it.
• Sodium An essential electrolyte that regulates fluid balance, blood pressure, and nerve and muscle function.
• Sole (f337) IgG4 Measures IgG4 antibodies to sole, which reflect your immune system's exposure to this fish; their link to food symptoms is debated.
• Sole (rf337) IgE Measures IgE antibodies to sole, a white flatfish food allergen, to check whether your immune system is sensitized to it.
• Soybean (f14) IgE
• Soybean (f14) IgG Measures IgG antibodies to soybean proteins, which mainly reflect how often you eat soy; their link to food-related symptoms is debated.
• Specific Gravity Measures how concentrated your urine is compared with water, giving a quick look at hydration and the kidneys' ability to concentrate or dilute urine.
• Spinach (f214) IgE Measures IgE antibodies to spinach to check for allergic sensitization to this leafy vegetable, read alongside any symptoms you have after eating it.
• Spruce (t201) IgE Measures IgE antibodies to spruce tree pollen to check for allergic sensitization to this conifer, which releases pollen in spring.
• Squamous Epithelial Cells Counts squamous epithelial cells in a urine sample, mainly showing whether the sample was contaminated by skin cells from the outer genital area.
• Squid (f258) IgE Measures IgE antibodies to squid to check for allergic sensitization to this mollusc seafood, interpreted alongside your symptoms and shellfish history.
• Stachybotrys chartarum/atra (RGm24) IgE Measures IgE antibodies to Stachybotrys chartarum, a mould found in water-damaged buildings, to check for allergic sensitization to it.