Kidney and electrolytes
Creatinine test
A waste product from muscles, cleared by the kidneys.
- Typical range
- Women about 0.5–1.1, men 0.7–1.3 mg/dL.
- Usual recheck
- About 3 months when out of range
Why it's done
The main blood test of kidney function.
What a high result can mean
The kidneys may be filtering less. Also higher with dehydration, high muscle mass or creatine supplements.
What a low result can mean
Low muscle mass; usually not a concern.
Got a report with Creatinine?
Upload the PDF to Clarilab: it reads the values in your browser, flags anything out of range and tracks your results over time.