Useful tip about the next step when eGFR is low

One of my outpatients sent me the results of laboratory tests ordered by her primary care physician, as she had been doing intermittently. She said that her doctor had told her that “Everything looks good”. But in reviewing the test results, I noted that the estimated glomerular filtration rate or eGFR was 58 mL/min/1.73 m2. In…