Biomarkers: explore one system at a time

Showing 301–320 of 1204 results

• Complement, TotalCH50 Measures the overall functional activity of your complement immune system, checking whether all its components are working together properly.
• Coombs Direct (Direct Antiglobulin Test) Checks whether antibodies are attached to your own red blood cells, which can cause them to be destroyed. Used to help diagnose autoimmune hemolytic anemia or transfusion reactions.
• Copeptin Measures copeptin, a stable marker of vasopressin (antidiuretic hormone) release, to help evaluate problems with water balance and sodium levels.
• Copper Measures copper levels in your blood, an essential trace mineral involved in energy production, iron metabolism, and connective tissue formation.
• Copper/Creatinine Ratio Compares urine copper to urine creatinine in a random sample, correcting for how dilute the urine is, to help look at copper excretion.
• Copper, Random Measures the concentration of copper in a random urine sample, used to help look at copper handling, particularly when Wilson disease is being considered.
• Copper RBC Measures copper stored inside your red blood cells, reflecting longer-term copper status compared to a serum copper level.
• Coriander/Cilantro (f317) IgE Measures IgE antibodies to coriander (cilantro), a common herb and spice, to check for allergic sensitization that may explain reactions after eating it.
• Corn, Grass (g202) IgE Measures IgE antibodies to corn (maize) pollen to check for allergic sensitization that may relate to summer allergy symptoms, especially near cornfields.
• Corn Smut, Tilletia tritici (m201), IgE Measures IgE antibodies to a smut fungus that infects cereal crops, to check for allergic sensitization to its spores, mainly relevant for farm and grain exposure.
• Corticosterone Measures corticosterone, an adrenal steroid made on the way to aldosterone, as part of a steroid panel that helps look at adrenal enzyme function.
• Cortisol, 1st Specimen Measures cortisol in the first of a series of timed samples, used to track how your cortisol changes across the day or during a test.
• Cortisol, 2nd Specimen Measures cortisol in the second of a series of timed samples, used to track how your cortisol changes across the day or during a test.
• Cortisol, 3rd Specimen Measures cortisol in the third of a series of timed samples, used to track how your cortisol changes across the day or during a test.
• Cortisol, 4th Specimen Measures cortisol in the fourth of a series of timed samples, used to track how your cortisol changes across the day or during a test.
• Cortisol, 5th Specimen Measures cortisol in the fifth of a series of timed samples, used to track how your cortisol changes across the day or during a test.
• Cortisol, 6th Specimen Measures cortisol in the sixth of a series of timed samples, used to track how your cortisol changes across the day or during a test.
• Cortisol (AM) Measures cortisol in a morning blood sample, when levels are normally highest, to help look at adrenal function and possible cortisol deficiency or excess.
• Cortisol, LC/MS Measures free cortisol in a saliva sample by LC/MS, often collected late at night to help look at cortisol rhythm and possible cortisol excess.
• Cortisol, P.M. Measures cortisol in an afternoon or evening blood sample, when levels are normally lower, to help look at the body's daily cortisol rhythm.