Phlebotomy Technician Practice Exam (NCPT/CPT)

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

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Which body system is being evaluated when drawing a BUN and Creatinine?

Cardiovascular System
Digestive System
Urinary System
Endocrine System

The correct answer is: Urinary System

A BUN (blood urea nitrogen) and Creatinine test evaluates the health of the urinary system. The BUN measures the amount of urea nitrogen in the blood, which is a waste product that is filtered and eliminated through the kidneys. The Creatinine test measures the level of creatinine, a waste product from muscle metabolism, in the blood. Both of these tests are important in determining how well the kidneys are functioning to filter and eliminate waste from the body. Option A (Cardiovascular System) is incorrect because while the kidneys are part of the cardiovascular system, the BUN and Creatinine tests specifically evaluate the function of the kidneys and not the overall health of the cardiovascular system. Option B (Digestive System) is incorrect because the digestive system is responsible for breaking down food and absorbing nutrients, not waste elimination. Option D (Endocrine System) is incorrect because while the endocrine