The Stages of CKD: Glomerular Filtration Rate

The glomerular filtration rate (GFR) is the rate at which kidneys eliminate waste from the blood.

  • Calculating your GFR requires measuring the amount of creatinine, a waste product of muscle activity, in your blood.
  • A higher than normal level of creatinine in the blood means that kidney function is slowing down.

 

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