what is egfr test
EGFR blood test. An EGFR blood test (Epidermal Growth Factor Receptor blood test) is designed to screen for and detect problems with the kidneys, and is additionally used to monitor the status of your kidneys if you are being treated for kidney ailments.n EGFR test can be done at regular intervals, if you have a kidney problem, high blood pressure or diabetes. It can reliably detect the condition of your kidneys even in early stages, when compared with a creatinine test alone.