Kidney Function is Determined by a Blood Test

A blood test is performed to measure creatinine levels in your blood.

  • Creatinine is a waste product that the kidneys typically “clean out”.
  • Everyone has creatinine in their bloodstream, but higher than normal levels could mean your kidneys are not working as well as they should.

Estimated Glomerular Filtration Rate (eGFR) is a calculation to see how well your kidneys are filtering. The equation uses the level of creatinine in your blood to determine your eGFR.

In early stages of disease, cysts are forming in your kidneys, but your kidneys can work harder to keep the kidneys functioning.

Therefore, early in the disease, your blood test may not tell you how much damage your kidney really has.

Cysts Forming
Normal eGFR (> 90)
Cysts gets larger
Slighty abnormal eGFR Level eGFR (60-89)
Cysts take over the kidney
Abnormal eGFR Level (< 60)

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