Decreased GFR defining renal failure is less than which value?

Decreased GFR defining renal failure is less than which value?

• A. 120 mL/min/1.73 m2
• B. 90 mL/min/1.73 m2
• C. 60 mL/min/1.73 m2
• D. 30 mL/min/1.73 m2

Answer: (C)

GFR reflects how well the kidneys are filtering waste from the blood. Normal GFR is about 125 mL/min/1.73 m2. Clinically, chronic kidney disease is defined when the GFR remains below 60 for at least about three months, which corresponds to CKD stage 3 or worse and signals a meaningful decline in renal function. Therefore, a GFR less than 60 mL/min/1.73 m2 defines renal failure in this context. Values at 120 or 90 are normal or near-normal, and 30 mL/min/1.73 m2 indicates more advanced disease, not the threshold used to define renal failure.

GFR reflects how well the kidneys are filtering waste from the blood. Normal GFR is about 125 mL/min/1.73 m2. Clinically, chronic kidney disease is defined when the GFR remains below 60 for at least about three months, which corresponds to CKD stage 3 or worse and signals a meaningful decline in renal function. Therefore, a GFR less than 60 mL/min/1.73 m2 defines renal failure in this context. Values at 120 or 90 are normal or near-normal, and 30 mL/min/1.73 m2 indicates more advanced disease, not the threshold used to define renal failure.