What is the normal creatinine level range in adults?

What is the normal creatinine level range in adults?

• A. 0.2-0.4 mg/dL
• B. 2.0-3.0 mg/dL
• C. 0.6-1.3 mg/dL
• D. 1.5-2.0 mg/dL

Answer: (C)

Serum creatinine is a marker of kidney function because it’s produced at a relatively constant rate by muscle and cleared by the kidneys. If the kidneys aren’t filtering well, creatinine builds up in the blood. In adults, the commonly used reference range is about 0.6 to 1.3 mg/dL. Values in this range generally indicate normal kidney function, though individual factors like muscle mass, sex, and age can shift the exact number. Men often have higher creatinine than women due to more muscle mass, and older adults may have lower values because of reduced muscle mass. The other ranges are outside what’s typically seen as normal for adults, so the 0.6-1.3 mg/dL interval best fits the expected range.

Serum creatinine is a marker of kidney function because it’s produced at a relatively constant rate by muscle and cleared by the kidneys. If the kidneys aren’t filtering well, creatinine builds up in the blood. In adults, the commonly used reference range is about 0.6 to 1.3 mg/dL. Values in this range generally indicate normal kidney function, though individual factors like muscle mass, sex, and age can shift the exact number. Men often have higher creatinine than women due to more muscle mass, and older adults may have lower values because of reduced muscle mass. The other ranges are outside what’s typically seen as normal for adults, so the 0.6-1.3 mg/dL interval best fits the expected range.