Current CKD Definition Takes into Account Both Relative and Absolute Risk.

Delanaye et al.1 propose that GFR thresholds to define CKD should depend on age. Specifically, people aged≥65 years with GFR 45–59 ml/min per 1.73 m2 and albumin-creatinine ratio<30 mg/g should not be classified as having CKD. This is not a new proposal. It has been discussed many times, including by the Kidney Disease Outcomes Quality Initiative in 2002 and Kidney Disease Improving Global Outcomes (KDIGO) work groups in 2009 and 2012.2 Each time, the consensus was that the GFR threshold for the definition of CKD should be age-independent. [.]