A patient with chronic renal failure will have lab work to evaluate his kidney function. The nurse knows that which of the following are most accurate in predicting kidney function? 

Explanation

• Creatinine clearance closely correlates with the glomerular filtration rate and tubular excretion ability. It is the most effective way to measure GFR in patients with chronic kidney disease

• The other options all test kidney function and disease, but they can be influenced by various factors that are unrelated to kidney disease

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