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  • Blood Test: von Willebrand Factor (vWF) Antigen for Parents


    Doctors order the vWF antigen test to help diagnose or monitor the treatment of von Willebrand disease.

  • Blood Test: von Willebrand Factor (vWF) Activity - Ristocetin Cofactor for Parents


    A von Willebrand factor (vWF) activity - ristocetin cofactor test lets doctors evaluate the functioning of a protein that helps blood to clot.

  • Blood Test: Testosterone for Parents


    A testosterone blood test may be done if a child seems to be entering puberty earlier or later than expected, or to check for damage or disease of the testes or ovaries, adrenal glands, or pituitary glands.

  • Prenatal Tests: First Trimester for Parents


    Find out what tests may be offered to you during the first trimester of pregnancy.

  • Prenatal Tests: Third Trimester for Parents


    Find out what tests may be offered to you during weeks 27 through 40 of pregnancy.

  • Blood Test: Luteinizing Hormone (LH) for Parents


    A luteinizing hormone (LH) test measures the level of this hormone in the bloodstream. LH plays an important role in sexual development.

  • COVID-19: Getting Tested for Parents


    As coronavirus spreads in communities, parents might wonder if their family should get tested. Here's how health care providers test for it.

  • Stool Test: Giardia for Parents


    This test may be done if a child has watery diarrhea, belly pain, lots of intestinal gas, appetite loss, and nausea or vomiting.

  • Test Anxiety for Teens


    Everyone feels a little nervous and stressed before a test. For some people, this normal anxiety can be intense.

  • Stress Less Over Tests for Teens


    Find out how to handle the stress that comes with tests.