This calculator uses the MDRD formula. All you need to input is age,sex, whether you are Afro-Caribbean in origin or any other racial group and serum creatinine in micromol/l.(If you run your mouse over some phrases a pop up box explaining it will show!) click on the calculate button and your glomerular filtration rate will be calcuated See the page background change according to the state of your kidneys. For the stages of chronic kidney disease click here

age in years
serum creatinine in micromol/l
sex	male female
race	Other Afro-Caribbean

• The MDRD is regarded as the best way of calculating your glomerular filtration rate

• Your glomerular filtration rate is the rate your kidneys are producing urine-the bigger the number the better your kidneys are

• This link will take you to a recommended UK national site about kidney disease

• Your creatinine level is measured by doing a blood test called urea and electrolytes or UE .This is a standard blood test and the result if done since November 2003 will probably be on the surgery computer
  • Afro-caribbeans need a correction factor to their result.If you are of other ethnic origin eg.white or asian go for the other option on the drop down menu