Canadian Society for Medical Laboratory Science (CSMLS) Practice Exam

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Which is a kidney function test?

The correct answer is: BUN

Blood Urea Nitrogen (BUN) is a specific test used to assess kidney function. It measures the amount of urea nitrogen, a waste product formed from the breakdown of proteins, in the blood. The kidneys are responsible for filtering urea from the bloodstream, so elevated levels of BUN can indicate impaired kidney function or conditions that affect the kidneys. Monitoring BUN levels is important for diagnosing and managing kidney-related diseases. Other tests mentioned do not specifically evaluate kidney function. Phenylketonuria (PKU) testing is used to detect metabolic disorders, Creatine Phosphokinase (CPK) levels are related to muscle injury and not kidney performance, and Follicle Stimulating Hormone (FSH) testing pertains to reproductive health. Each of these tests serves different medical purposes, further underscoring the unique role of BUN as a kidney function test.