Biomarkers: explore one system at a time

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• HDL Cholesterol The 'good' cholesterol that helps remove excess cholesterol from your bloodstream. Higher levels are generally linked to lower cardiovascular risk.
• HDL Large
• HDL Particle NumberHDL-P HDL particle number — counts your actual HDL ('good' cholesterol) particles rather than just the cholesterol they carry, offering a more detailed cardiovascular risk picture.
• HDL Size Measures the average size of your HDL ('good' cholesterol) particles, used alongside particle number for a more detailed cardiovascular risk assessment.
• Helicobacter pylori, Urea Breath Test
• Helminthosporium halodes (m8) IgE
• Hematocrit The percentage of your blood volume made up of red blood cells. Used to help diagnose anemia or polycythemia (excess red blood cells).
• Hemoglobin The oxygen-carrying protein in your red blood cells. A core marker for diagnosing anemia and other blood disorders.
• Hemoglobin (Stool)
• Hepatitis A Antibody, Total Detects both past infection and immunity (from infection or vaccination) to hepatitis A.
• Hepatitis A (HAV), IgM Indicates a recent or current hepatitis A infection.
• Hepatitis B Core Antibody (HBcAb), IgM Indicates a recent or acute hepatitis B infection.
• Hepatitis B Core Antibody, Total Indicates past or current hepatitis B infection at some point — this antibody isn't produced by vaccination, only by actual infection.
• Hepatitis B (HBV) Surface Antibody, Qualitative Indicates immunity to hepatitis B, whether from past infection or vaccination.
• Hepatitis B Surface Antibody Immunity, Quantitative
• Hepatitis B Surface Antibody, Qualitative
• Hepatitis B Surface AntigenHBsAg A protein on the surface of the hepatitis B virus — its presence indicates an active, current hepatitis B infection.
• Hepatitis C IgG Antibody Screens for past or current exposure to hepatitis C; a positive result is typically followed by additional testing to confirm active infection.
• Hepatitis C Viral RNA, Quantitative, Real-Time PCR (IU/mL)
• Hepatitis C Viral RNA, Quantitative, Real-Time PCR (Log IU/mL)