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Function is now measurably reduced — symptoms begin, monitoring tightens, and treatment intensifies.
Evidence reviewed & updated: 2026-07 — based on KDIGO 2024, KDOQI, and published trial data.
Stage 3A (eGFR 45-59) is when CKD becomes clinically visible: fatigue, foamy urine, and high blood pressure become more common. It's the stage where dietary changes (potassium, phosphorus, protein) start mattering, anemia screening begins, and specialist referral becomes appropriate. With aggressive treatment, many patients stay at stage 3 for a decade or more.
Physiologically: filtration drops below ~60, where waste products begin to accumulate (BUN, uric acid), phosphorus handling worsens, and anemia (erythropoietin deficiency) starts in some patients. Blood pressure becomes harder to control — most patients need 2-3 agents.
Symptoms (if any): fatigue, poor concentration, foamy urine (proteinuria), increased urination at night (nocturia), and mild ankle swelling. Many patients still feel 'fine' — but labs start telling the story.
This is the stage where diet truly enters the picture: KDOQI recommends sodium <2g/day, and potassium/phosphorus monitoring begins. Most Indian renal diet adjustments start here.
Medications: maximize ACEi/ARB (titrate for proteinuria), add SGLT2 inhibitor (KDIGO: eGFR >20, albuminuric — strong recommendation), statin for cardiovascular protection (CKD is a coronary equivalent), and consider finerenone for diabetic patients with residual albuminuria (FIDELIO-DKD evidence).
Monitoring: eGFR + UACR every 6 months (or 3-monthly if rapidly progressing), potassium 1-2x/year, hemoglobin yearly (screen for anemia), PTH/calcium/phosphorus yearly (screen for MBD), vitamin D yearly.
Referral: this is the stage for a nephrology referral if not already under care — for medication optimization, dietitian referral, and modality education. Late referral (at stage 4-5) is associated with worse outcomes (European/Indian registry data).
Sodium: <2g/day (India's average intake is 3-6g — this is the single biggest lever). Potassium: no strict restriction yet unless serum K+ is elevated, but avoid high-potassium foods if K+ >5.0 (bananas, coconut water, spinach). Phosphorus: begin limiting if serum PO4 >4.6 — reduce processed foods with phosphate additives.
Protein: 0.8 g/kg/day (NOT high-protein diets). For a 60 kg person: ~48g/day — roughly 2 small servings of dal/meat plus dairy. Vegetarian Indian diets often have adequate protein; the danger is excessive protein supplementation.
Fluid: no restriction yet (unless swelling) — drink to thirst. Avoid regular dehydration, especially in summer heat and physical work.
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The 'moderate-severe' stage — where progression accelerates, anemia and bone disease begin, and dialysis planning conversations start.
Learn moreDiabetes is the #1 cause of kidney failure in India — here's how to protect your kidneys with SGLT2 inhibitors, BP control, and smart monitoring.
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This content is a general reference, not medical advice, a diagnosis, or a treatment plan. Do not change your diet, fluids, medicines, or dialysis plan without your nephrologist or renal dietitian. Individual recommendations depend on your labs, medications, conditions, and care plan.