What is the expected urine output in a healthy adult?

The expected urine output for a healthy adult typically falls within the range of 800 to 2000 mL per day. This range reflects the body's ability to balance fluid intake and excretion while maintaining homeostasis. Urine production is influenced by various factors, including fluid intake, physical activity, and environmental conditions.

In healthy adults, urine output is primarily regulated by the kidneys, which filter excess fluid and waste products from the blood. When hydration levels are adequate, the kidneys excrete more concentrated urine, leading to an output within this expected range. Factors such as high fluid intake or certain medical conditions can lead to outputs exceeding this range, while dehydration may result in lower outputs.

Other ranges provided in the options do not encompass the typical physiological understanding of normal urine output, which is why they do not capture the correct response adequately. Understanding the ranges for urine output helps healthcare professionals assess kidney function and overall fluid balance in patients.