
Blood: The superhighway of the body
Brains On! Science podcast for kids
How Many Different Blood Tests Are There?
When someone takes your blood, it's sent to a lab like this one for testing. Rhea says they can test blood for all sorts of things. They can see how many red blood cells you have and measure the amount of hormones or minerals. Some count the number of red blood cells, or others check your blood broth to see if all the ingredients are in balance. But before you can test it, the blood needs to get to the lab.
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