A nurse reviews lab results showing a serum creatinine level of 2.8 mg/dL (normal 0.6-1.2 mg/dL) in a resident with chronic kidney disease. This finding indicates dysfunction in which primary kidney function?
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DRegulation of blood pressure through renin release
✓ Correct answer: B. Glomerular filtration of waste productsCreatinine is a waste product filtered by the glomeruli in the kidneys. Elevated serum creatinine indicates the glomerular filtration rate is decreased, meaning the kidneys are not effectively filtering waste products from the blood.
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Theory