Which of the following blood types is considered to be a universal donor so that the packed red blood cells can be used in an emergency situation when the blood type of a patient is unknown?
A)O +
B)AB-
C)O-
D)AB+

Question

Quizplus · Accepted Answer

The universal donor is considered O-. This blood type means that there are no A or B proteins on the red blood cells, nor are there any Rh proteins on the cell. All other blood types may have proteins on them that will cause reactions in patients who receive the blood if they have anti-bodies to those proteins because of their own blood type. Patients who have O blood have anti-bodies to both A and B proteins; patients who have A blood have B anti-bodies; patients with B blood have A antibodies; and patients with AB blood have no anti-bodies to either A or B.

Which of the Following Blood Types Is Considered to Be