“Left vs. Right= non vax vs. VAX,” read the post, which also featured two bags of what appeared to be differently red-hued bags of blood that looked “like a bag of blood clots.” Some users used the ...

We all know blood is red. But not all red blood is created equal. The exact shade of your blood can actually tell you a lot about what’s happening inside your body. And while you might not spend much ...

When a baby is born in the United States, a few drops of blood are taken from their heel to test for many conditions that could affect the child’s long-term health or survival. This testing is part of ...