Certified Nursing Assistant (CNA) Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

How much urine, on average, do the kidneys excrete per day?

0.5-1 liter

1.5-2 liters

2-2.5 liters

1-1.5 liters

The average amount of urine excreted by the kidneys in a healthy adult is typically between 1 to 2 liters per day, depending on various factors such as fluid intake, physical activity, and overall health. This makes the range of 1 to 1.5 liters a reasonable estimate for daily urine output; however, it is more common to see averages cited between 1.5 to 2 liters in many clinical contexts.

This range accounts for the body's need to balance fluid levels and remove waste products effectively. The kidneys filter blood, reabsorbing necessary substances while excreting excess fluid and waste as urine. It's important to understand that factors like hydration, diet, and body temperature can influence this output significantly. While 1 to 1.5 liters may be acceptable in certain situations, the broader average of 1.5 to 2 liters reflects a wider range of healthy kidney function in various populations.

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