What is the typical hourly urine output produced by the kidneys?

What is the typical hourly urine output produced by the kidneys?

• A. 10-20 mL
• B. 80-100 mL
• C. 120-150 mL
• D. 50-60 mL

Answer: (D)

Normal hourly urine output reflects kidney function and fluid balance. In a healthy adult, kidneys typically produce about 0.5 mL of urine per kilogram of body weight per hour, which generally translates to roughly 40–80 mL per hour, commonly cited as around 50–60 mL. This matches a daily output of about 1–2 liters with normal fluid intake. So, about 50–60 mL per hour is the typical rate. Values like 10–20 mL per hour suggest very low output (oliguria), while 80–100 mL or 120–150 mL per hour would be higher than normal without specific conditions or diuretics.

Normal hourly urine output reflects kidney function and fluid balance. In a healthy adult, kidneys typically produce about 0.5 mL of urine per kilogram of body weight per hour, which generally translates to roughly 40–80 mL per hour, commonly cited as around 50–60 mL. This matches a daily output of about 1–2 liters with normal fluid intake. So, about 50–60 mL per hour is the typical rate. Values like 10–20 mL per hour suggest very low output (oliguria), while 80–100 mL or 120–150 mL per hour would be higher than normal without specific conditions or diuretics.