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  • Blood for Teens


    Learn what blood is, what it does, what the different kinds of blood cells are, and how blood travels through the body.

  • Blood Test: Complete Blood Count for Parents


    The complete blood count (CBC) is the most common blood test. It analyzes red blood cells, white blood cells, and platelets.

  • Donating Blood for Teens


    There's a 97% chance that someone you know will need a blood transfusion. Blood donors — especially donors with certain blood types — are always in demand. Find out what's involved in this article for teens.

  • Blood Transfusions for Parents


    A blood transfusion is a safe and relatively simple medical procedure that replaces blood lost during surgery or because of an injury or illness.

  • Blood Transfusions for Teens


    Millions of people a year get blood transfusions in the United States. This article explains why people need them and who donates the blood used.

  • Blood Types for Teens


    Learn why blood is grouped into types, what the types and blood components are, and why blood transfusions matter.

  • What's Blood? for Kids


    Blood swirls through your veins and arteries, but what is it really? Find out about blood in this article for kids.

  • Blood Culture for Parents


    A blood culture is a test that looks for germs (such as bacteria or fungi) in the blood.

  • Lead Blood Test for Parents


    A lead blood test checks for lead, a metal that can harm kids’ health. Learn when it’s given and what the results mean.

  • Blood in the Urine (Hematuria) for Teens


    Hematuria is pretty common, and most of the time it's not serious. Find out what causes blood in the urine and what to do about it.