Biomarkers: explore one system at a time

Showing 981–1000 of 1204 results

• Rape Seed (rf316) IgE Measures IgE antibodies to rapeseed, the oilseed used for canola oil, to check whether your immune system is sensitized to it.
• Rape Weed (w203) IgE Measures IgE antibodies to rape (oilseed rape) pollen, a crop plant allergen, to check whether you are sensitized to it.
• Rapid Plasma Reagin (RPR) AntibodyRPR A screening test for syphilis, based on detecting an immune response typical of active infection.
• Raspberry (rf343) IgE Measures IgE antibodies to raspberry, a fruit food allergen, to check whether your immune system is sensitized to this berry.
• Rat (e87) IgE Measures IgE antibodies to rat allergens, including proteins from dander and urine, to check whether you are sensitized to rats.
• Rat Epithelia (e73) IgE Measures IgE antibodies to rat epithelia (skin and dander), an animal allergen, to check whether you are sensitized to rats.
• Reactive Lymphocytes Reports lymphocytes that look activated under the microscope, a common sign that your immune system is responding to an infection, especially a viral one.
• Red Blood Cell Count (RBC) Red blood cell count — the number of oxygen-carrying red blood cells in your blood, used to help diagnose anemia or polycythemia.
• Red Blood Cells (RBC), Urine Counts red blood cells seen under the microscope in your urine, used to look for bleeding anywhere in the kidneys or urinary tract.
• Red Cedar (t57) IgE Measures IgE antibodies to red cedar pollen, a tree allergen of the cypress family, to check whether you are sensitized to it.
• Red Cell Distribution WidthRDW Red Cell Distribution Width — measures how much your red blood cells vary in size, helpful for narrowing down the cause of anemia.
• Red Kidney Bean (f287) IgE Measures IgE antibodies to red kidney bean, a legume food allergen, to check whether your immune system is sensitized to it.
• Red Top Grass (g9) IgE Measures IgE antibodies to red top grass pollen, a common grass allergen, to check whether you are sensitized to it.
• Renal Epithelial Cells Counts renal epithelial cells seen under the microscope in your urine, cells from the kidney tubules that can signal kidney injury.
• Reticulocyte, Absolute The absolute number of reticulocytes, young red blood cells, in your blood, showing how actively your bone marrow is making new red cells.
• Reticulocyte Count, Automated The percentage of young red blood cells in your blood, reflecting how actively your bone marrow is producing new cells.
• Reverse T3 An inactive form of T3 thyroid hormone. Sometimes checked alongside standard thyroid tests when thyroid hormone conversion issues are suspected.
• Rheumatoid Factor Measures rheumatoid factor, an autoantibody often found in rheumatoid arthritis, used with other tests to help evaluate joint pain and inflammation.
• Rheumatoid Factor (IgA) Measures the IgA type of rheumatoid factor, an autoantibody that may add information when evaluating rheumatoid arthritis and Sjögren's syndrome.
• Rheumatoid Factor (IgG) Measures the IgG type of rheumatoid factor, an autoantibody that may add information when evaluating rheumatoid arthritis and related conditions.