Add Yahoo as a preferred source to see more of our stories on Google. Knowing your blood type is critical during emergency health situations. Knowing your blood type is crucial medical information, ...

Traditionally, blood typing requires forward typing, in which antibodies found in type A and type B blood are added to a blood sample to test for reactivity, followed by reverse typing, in which serum ...

Knowing your blood type is crucial medical information, but unless you've given blood before you might not be sure what yours is. I realized this when I was asked for mine while filling out paperwork ...