In renal physiology, if a patient has a glomerular filtration rate (GFR) of 125 mL/min, how many liters of glomerular filtrate are produced in 24 hours?
Answer and explanation
Correct answer: C. 180 liters per day
- Step 1: GFR = 125 mL/min. In one hour: 125 mL/min 60 min = 7,500 mL/hr = 7.5 L/hr. Step 2. In 24 hours: 7.5 L/hr 24 hr = 180 Liters/day. Answer: 180 liters per day. Why not the others: Approximately 99% of this 180 L is reabsorbed by the nephron, yielding roughly 1.5 to 2 L of excreted urine.
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