Phlebotomy Technician Practice Exam (NCPT/CPT)

Disable ads (and more) with a membership for a one time $4.99 payment

Conquer the NCPT/CPT Phlebotomy Technician Exam with ease! Our practice quiz offers in-depth questions, personalized feedback, and strategies to ensure your success.

Start Multiple Choice Practice Test
Start Flash Cards

Practice this question and more.

What percentage of separated blood in a tube is RBC?

  1. 5%

  2. 10%

  3. 15%

  4. 20%

The correct answer is: 10%

RBC or red blood cells, also known as erythrocytes, make up approximately 40-45% of the total volume of blood. Therefore, options A, C, and D, which are lower than 40%, are incorrect. Option B, which is 10%, is the most accurate estimation of the percentage of separated blood in a tube composed of mostly RBC.

More Questions Like This