Educational information only — CKD care and nutrition should be individualized with your healthcare team.
Kidney Clarity Guide

Stage 3 CKD: What the Numbers Mean and What to Ask Next

Stage 3 CKD covers eGFR 30–59 and is divided into 3a and 3b. Learn what that means without treating one lab value as a diagnosis.

Reviewed for source alignment: September 2026

Health note: This page is general education, not diagnosis or treatment advice. Do not change medicines, supplements, fluid targets, or a prescribed diet based on this page alone.

Stage 3 CKD is divided into stage 3a (eGFR 45–59) and stage 3b (30–44). A healthcare professional interprets these values alongside duration, urine findings, medical history and trends.

Questions worth asking

Food at stage 3

There is no universal stage 3 menu. Sodium, protein, potassium and phosphorus needs depend on the individual. See our Stage 3 CKD diet guide.

Sources & further reading