Body systemsQuestion 1662 of 1700

What is the normal range of daily urine output for an adult?

  1. Less than 100 mL a day
  2. Five to six liters a day
  3. About 300 mL a day
  4. One to two liters a day
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Correct answer: One to two liters a day

Output below about 500 mL a day can signal severe dehydration or kidney disease.

Source: Nursing Assistant (Reuter), 11.7: Urinary System

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Questions last reviewed: 18 October 2026