Biomarkers: explore one system at a time

Showing 1001–1020 of 1204 results

• Rheumatoid Factor IgMRF An antibody associated with rheumatoid arthritis and some other autoimmune or chronic inflammatory conditions, though it can also be positive without disease.
• Rhizopus nigricans (m11) IgE Measures IgE antibodies to Rhizopus nigricans, the common bread mould, to check whether you are sensitized to this mould.
• Rh Type Identifies whether your blood is Rh-positive or Rh-negative, an important factor for blood transfusions and pregnancy management.
• Ribosomal P Antibody An autoantibody associated with lupus, particularly linked to neuropsychiatric symptoms in some patients.
• Rice (f9) IgE Measures IgE antibodies to rice, a cereal grain food allergen, to check whether your immune system is sensitized to it.
• RNP Antibody An autoantibody associated with mixed connective tissue disease and, at times, lupus.
• Rough Marsh Elder (w16) IgE Measures IgE antibodies to rough marsh elder pollen, a weed related to ragweed, to check whether you are sensitized to it.
• Rough Pigweed (w14) IgE Measures IgE antibodies to common pigweed pollen, a late-summer allergy trigger.
• Rubella Antibody (IgG), Immune Status Indicates immunity to rubella (German measles), whether from past infection or vaccination — commonly checked during pregnancy planning.
• Rubella IgM Indicates a recent or current rubella infection.
• Russian Thistle (w11) IgE Measures IgE antibodies to Russian thistle (tumbleweed) pollen, a weed allergen of dry regions, to check whether you are sensitized to it.
• Rye (f5) IgE Measures IgE antibodies to rye grain, a cereal food allergen, to check whether your immune system is sensitized to it.
• Rye Food IgG4 Measures IgG4 antibodies to rye, which reflect your immune system's exposure to this grain; their link to food symptoms is debated.
• Saccharomyces cerevisiae Antibody (ASCA) (IgA) An antibody sometimes elevated in Crohn's disease, used as part of inflammatory bowel disease evaluation.
• Saccharomyces cerevisiae Antibody (ASCA) (IgG) An antibody sometimes elevated in Crohn's disease, used as part of inflammatory bowel disease evaluation.
• Salivary Gland Protein 1 (SP1) Antibody (IgA) Measures IgA antibodies to salivary gland protein 1, a newer marker studied as an early sign of Sjögren's syndrome.
• Salivary Gland Protein 1 (SP1) Antibody (IgG) Measures IgG antibodies to salivary gland protein 1, a newer marker studied as an early sign of Sjögren's syndrome.
• Salivary Gland Protein 1 (SP1) Antibody (IgM) Measures IgM antibodies to salivary gland protein 1, a newer marker studied as an early sign of Sjögren's syndrome.
• Salmon (f41) IgE Measures IgE antibodies to salmon, a fish food allergen, to check whether your immune system is sensitized to it.
• Salmon (f41) IgG4 Measures IgG4 antibodies to salmon, which reflect your immune system's exposure to this fish; their link to food symptoms is debated.