GFR for stage 2 kidney damage with mild low GFR?

• A. > 90 mL/min/1.73 M2
• B. 60-80 mL/min/1.73 M2
• C. 30-59 mL/min/1.73 M2
• D. 15-20 mL/min/1.73 M2

Answer: (B)

Stage 2 CKD is a mild decrease in kidney function, defined by an estimated GFR roughly between 60 and 89 mL/min/1.73 m2, usually with evidence of kidney damage. The option that sits within this range (60–80) best matches a mild reduction in GFR, which is what stage 2 represents. The other ranges represent either normal or near-normal GFR (>90), or more advanced impairment (30–59 or 15–20) that corresponds to stage 3 or higher. So this option reflects the expected level of function for stage 2.