Q:

What are normal kidney function levels for a 91-year old female?

A:

Quick Answer

The normal creatinine clearance rate for a woman in her 90s is 55 to 75 milliliters per minute, according to WebMD. The normal glomerular filtration rate for a woman in her 90s is around 60, according to a study published in Kidney International.

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Full Answer

Creatinine clearance is a measure of how well the kidneys are functioning. Normal creatinine clearance values for a 40-year-old woman are 87 to 107 milliliters per minute, according to WebMD. Creatinine clearance rates drop approximately 6.5 milliliters per minute for each decade of life after age 20.

Glomerular filtration rate is another measure of how well the kidneys are functioning, according to the National Kidney Foundation. A glomerular filtration rate of less than 90 indicates some degree of kidney impairment.

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