Specialty: Lab Tests

Tests and Procedures: L

  • Lactate Dehydrogenase (CSF)

    This test measures the amount of an enzyme in your cerebrospinal fluid. The test can help diagnose diseases and conditions that affect your central nervous system.

  • Lactate Dehydrogenase Isoenzymes

    This test measures different enzymes in your blood. You may need this test if you've had a heart attack, or if you have a blood disorder or liver damage.

  • Lactic Acid Dehydrogenase (Blood)

    This test looks at how much of the enzyme LDH you have in your blood. Higher levels of this substance could mean you've had a heart attack or other tissue damage.

  • Lactose Tolerance (Blood)

    This test tells whether your body is able to break down lactose, a sugar found in milk and other dairy products. If you can't digest lactose, you have lactose intolerance.

  • Lactose Tolerance Hydrogen (Breath)

    This test measures the amount of hydrogen gas in your breath. It can help find out if you are unable to digest milk and other dairy products.

  • LDL Cholesterol

    This test measures the amount of LDL cholesterol in your blood. It may be done as part of a routine exam for high cholesterol.

  • Lead (Blood)

    This test measures the amount of lead in your child’s blood. High levels of lead in the blood can be toxic.

  • Lecithin-Sphingomyelin Ratio (Amniotic Fluid)

    This test measures two substances found in amniotic fluid near the end of pregnancy. The amounts can tell your doctor how mature your unborn baby's lungs are.

  • Legionella Antibody

    This test looks for an antibody that may be in your blood if you have Legionnaires’ disease. This disease is a type of pneumonia or serious lung infection.

  • Leptin (Blood)

    This test measures the amount of leptin in your blood. The test can help figure out how much body fat you have.

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