Nationally Registered Certified Medical Assistant (NRCMA) (NAHP) Practice Exam

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Study for the Nationally Registered Certified Medical Assistant Exam. Prepare with interactive quizzes and multiple-choice questions that come with helpful hints and explanations. Get ready to earn your certification with confidence!

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Which blood type is considered the universal donor?

  1. A

  2. B

  3. AB

  4. O

The correct answer is: O

This question is asking for the blood type that can be safely donated to any recipient without causing any negative reactions. This blood type, widely known as the "universal donor," is type O. This is because type O blood does not possess either A or B antigens on the surface of red blood cells, making it compatible with any blood type. Choices A, B, and C are incorrect because they all possess either A or B antigens on their red blood cells, making them potentially incompatible with certain blood types. Therefore, type O is the best and most compatible option for blood donation.

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