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. Consult with Nephrologist (DR RAJESH GOEL) Sr Nephrologist in delhi NCR.