Figure 1. The relationship of serum creatinine concentrations to kidney function (mGFR) in Blacks and non-Blacks using the 2009 CKD-EPI formula for 60-year-old males.

Blacks and non-Blacks are assigned the same CKD stage and qualify for the same treatment when they have the same expected level of measured kidney function (GFR), which is not the same as having the same creatinine concentration.  Claims that Blacks are under-diagnosed or undertreated based on their creatinine concentration (which is not kidney function) ignore this fundamental principle.