Question for the letter B: Blood!

A setup for blood transfusion showing the bag of blood and tubes to bring blood to the patient

Which blood type can be donated to anybody?

A. O negative

B. AB positive

C. A negative

Scroll down for the answer!

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The answer is A. O negative

O negative = donate to anyone

Blood cells can have A, B, or Rh on their surface. If there is not A or B, the blood type is O. If Rh factor is present, the blood type is positive. If Rh factor is not present, the blood type is negative. Example: B positive blood cells have B and Rh.

Donated blood should not contain anything the recipient doesn’t already have: People with O negative blood are universal donors because their blood doesn’t have A, B or Rh to cause an adverse reaction.

AB positive has A, B, and Rh, so blood can be received from anyone (universal recipient).

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