Retest eGFR, ACR, and Urinalysis
In patients with a new finding of reduced eGFR, repeat eGFR to exclude causes of acute deterioration of eGFR (e.g. acute kidney injury, or initiation of ACEi or ARB therapy).
Test ACR and Urinalysis.
In patients with a previous finding of an abnormal eGFR and ACR in the past 6 months, you do not have to re-test.