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What method is used to calculate egfr?
Modification of Diet in Renal Disease (MDRD) equation
serum creatinine
age
gender
ethnicity
What May invalidate the use of the Modification of Diet in Renal Disease (MDRD) equation to calculate a patients eGFR
Pregnancy
muscle mass - amputees
Eating red meat 12 hours before the sample being taken
CKD staging
1
eGFR >90
with evidence of kidney damage - such as proteinuria and hematurea / abnormal UE such as hyperkalemia
2
60-90
some sign of kidney damage (if kidney tests* are normal, there is no CKD)
3a
45-59 ml/min
3b
30-44 ml/min
4
15-29 ml/min
5
Less than 15 ml/min, established kidney failure - dialysis or a kidney transplant may be needed