What is the normal glomerular filtration rate (GFR) range in mL/min/1.73 m^2?

What is the normal glomerular filtration rate (GFR) range in mL/min/1.73 m^2?

• A. 60 to 90
• B. 90 to 120
• C. 120 to 150
• D. 150 to 180

Answer: (B)

GFR reflects how much plasma the kidneys filter each minute, adjusted for body size using the normalization to 1.73 m^2 of body surface area. In a healthy adult, this filtration rate sits around 125 mL/min, which is encompassed by the typical reference range of 90 to 120 mL/min/1.73 m^2. Values in this 90–120 window indicate normal kidney function. GFR below about 60 suggests impaired kidney function, while values above 120 can occur with hyperfiltration states but are not considered normal in a healthy adult. So the range that represents normal, baseline kidney function is 90–120 mL/min/1.73 m^2.

GFR reflects how much plasma the kidneys filter each minute, adjusted for body size using the normalization to 1.73 m^2 of body surface area. In a healthy adult, this filtration rate sits around 125 mL/min, which is encompassed by the typical reference range of 90 to 120 mL/min/1.73 m^2. Values in this 90–120 window indicate normal kidney function. GFR below about 60 suggests impaired kidney function, while values above 120 can occur with hyperfiltration states but are not considered normal in a healthy adult. So the range that represents normal, baseline kidney function is 90–120 mL/min/1.73 m^2.