What is the eGFR range for CKD stage 2 (mildly decreased)?

What is the eGFR range for CKD stage 2 (mildly decreased)?

• A. 15-29 mL/min/1.73 m².
• B. 30-59 mL/min/1.73 m².
• C. 45-75 mL/min/1.73 m².
• D. 60-89 mL/min/1.73 m².

Answer: (D)

CKD staging uses the eGFR to show how much kidney function has declined. The range that corresponds to mildly decreased kidney function, or CKD stage 2, is 60 to 89 mL/min/1.73 m². Numbers in this range mean the kidneys aren’t filtering at full speed, but the function isn’t severely reduced yet. As a reference, CKD stage 3 is 30–59, stage 4 is 15–29, and stage 5 is below 15. The option that lists 60–89 fits this stage definition, while ranges like 15–29 or 30–59 indicate more advanced disease, and a range such as 45–75 isn’t a standard CKD stage interval because it overlaps multiple stages.

CKD staging uses the eGFR to show how much kidney function has declined. The range that corresponds to mildly decreased kidney function, or CKD stage 2, is 60 to 89 mL/min/1.73 m². Numbers in this range mean the kidneys aren’t filtering at full speed, but the function isn’t severely reduced yet. As a reference, CKD stage 3 is 30–59, stage 4 is 15–29, and stage 5 is below 15. The option that lists 60–89 fits this stage definition, while ranges like 15–29 or 30–59 indicate more advanced disease, and a range such as 45–75 isn’t a standard CKD stage interval because it overlaps multiple stages.