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How Much My Kidneys Are Working

How to know how much my kidneys are working?

Glomerular-filtration Rate: It is a rate at which blood is filtered through glomeruli in a minute. It tells us that how much the kidneys are functioning. It can be measured or estimated. There are various formulas for measuring GFR:

  • Cockcroft Gault formula (CGF)
  • Modified diet MDRD
  • Creatinine clearance (Urine)
  • Others
How to estimate GFR:
  • Inulin
  • DTPA

Most commonly used are CGF and DTPA
Using this GFR we can differentiate chronic kidney disease(CKD) into different

  • Stage 1
  • Stage 2
  • Stage 3
  • Stage 4
  • Stage 5
  • Stage 5 ND (not on dialysis)
  • Stage 5 D (on dialysis)
  • Stage 5 T (post transplant)

The patient can himself calculate GFR easily by computed formulas which are easily available on mobile applications and internet.


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