Biomarkers: explore one system at a time

Showing 81–100 of 1204 results

• Amyloid Beta 42 Peptide Measures amyloid beta 42 in plasma, the protein fragment that forms plaques in the brain in Alzheimer's disease, used to calculate the 42/40 ratio.
• Anaplasma phagocytophilum DNA, Qualitative Real-Time PCR Looks for the genetic material of Anaplasma phagocytophilum, a tick-borne bacterium that causes anaplasmosis, in your blood to help confirm a recent infection.
• Anchovy (f313) IgE Measures IgE antibodies to anchovy, a fish, used to check for allergic sensitization that may explain your symptoms.
• Androstenedione A hormone produced by the adrenal glands and gonads that serves as a building block for testosterone and estrogen. Tested to evaluate excess androgen symptoms or adrenal disorders.
• Angiotensin-1-Converting EnzymeACE An enzyme involved in blood pressure regulation. Elevated levels are used, along with other findings, to help support a diagnosis of sarcoidosis.
• Anise (f271) IgE Measures IgE antibodies to anise, a spice, used to check for allergic sensitization that may explain your symptoms.
• Antidiuretic HormoneADH Also called vasopressin, this hormone helps your kidneys regulate how much water your body retains. Abnormal levels are linked to conditions affecting fluid balance, like diabetes insipidus or SIADH.
• Anti-Jo-1 An autoantibody associated with certain autoimmune muscle and lung conditions, including polymyositis, dermatomyositis, and antisynthetase syndrome.
• Antinuclear AntibodiesANA Antibodies that target structures inside your own cells' nuclei. A positive result is a key screening marker for autoimmune conditions like lupus.
• Antistreptolysin O AntibodiesASO An antibody that indicates a recent or past strep throat infection. Used to help diagnose complications like rheumatic fever.
• Antithrombin III Activity Measures the activity of a protein that naturally helps prevent excessive blood clotting. Low levels are linked to an increased risk of blood clots.
• Antithrombin III Antigen Measures the amount of antithrombin, a natural anticlotting protein, in your blood, used when looking for causes of an increased tendency to clot.
• ApoE Genotype A genetic test that identifies your APOE gene variants, which influence how your body processes cholesterol and are linked to cardiovascular and Alzheimer's disease risk.
• APOE Phenotype Identifies which apolipoprotein E forms (E2, E3, E4) are in your blood, which reflect inherited gene variants linked to Alzheimer's and heart disease risk.
• Apolipoprotein A-1ApoA-1 The main protein component of HDL ('good') cholesterol. Higher levels are generally associated with better cardiovascular protection.
• Apolipoprotein B/Apolipoprotein A-1 A ratio calculated from apolipoprotein B and apolipoprotein A-1, comparing cholesterol-carrying particles that harm arteries with those that protect them, to assess cardiovascular risk.
• Appearance Describes how clear or cloudy your urine sample looks, a basic part of urinalysis that can hint at infection, crystals or other particles.
• Apple (f49) IgE Measures IgE antibodies to apple, used to check for allergic sensitization that may explain your symptoms.
• Apple (f49) IgG Measures IgG antibodies to apple, which mainly reflect that you have eaten it; their link to food-related symptoms is debated.
• Apricot (f237) IgE Measures IgE antibodies to apricot, used to check for allergic sensitization that may explain your symptoms.