Phlebotomy Technician Practice Exam (NCPT/CPT)

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare effectively for the NCPT/CPT Phlebotomy Technician Exam. Utilize flashcards and multiple-choice questions with hints and explanations to excel in your exam.

Start Multiple Choice Practice Test
Start Flash Cards

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What percentage of plasma is water (H2O)?

  1. 75%

  2. 80%

  3. 90%

  4. 95%

The correct answer is: 90%

Plasma is the liquid component of blood and makes up about 55% of the total blood volume. In this case, the question is asking specifically about the percentage of water in plasma. Water makes up about 90% of plasma, making option C the correct answer. The other options are incorrect because they either underestimate (75%, 80%) or overestimate (95%) the percentage of water in plasma. Option D may seem close to the correct answer, but it is important to remember that plasma is not pure water, and the remaining 10% includes other substances such as proteins, electrolytes, and nutrients. Therefore, the correct answer is C 90%.

More Questions Like This