Figure 2. Relationships of mGFR to (A) race-free (2021) CKD-EPI eGFR and (B) 2009 race-corrected CKD-EPI eGFR.

Whereas a particular eGFR (e.g., 75 mL/min/1.73m²) correspond to essentially the same mGFR in Blacks and non-Blacks when estimated by 2009 CKD-EPI (A), it corresponds to very different mGFR in Blacks than non-Blacks when estimated by 2021 CKD-EPI eGFR (B).

Adapted from Inker et al.’s Figure 1 [16].