Chronic Kidney Disease (CKD) is frequently asymptomatic in its early stages (Stages 1–3), yet early detection provides a critical window to halt or significantly retard progression toward end-stage renal disease (ESRD). Combining estimated glomerular filtration rate (eGFR) with urine albumin-to-creatinine ratio (uACR) is essential for accurate KDIGO risk stratification.
KDIGO Risk Grid: eGFR and Albuminuria Categories
| eGFR Category (mL/min/1.73m²) | A1: Normal to Mild (< 30 mg/g) | A2: Moderate (30–300 mg/g) | A3: Severe (> 300 mg/g) |
|---|---|---|---|
| G1 (≥ 90) | Low Risk | Moderate Risk | High Risk |
| G2 (60–89) | Low Risk | Moderate Risk | High Risk |
| G3a (45–59) | Moderate Risk | High Risk | Very High Risk |
| G3b (30–44) | High Risk | Very High Risk | Very High Risk |
| G4 (15–29) | Very High Risk | Very High Risk | Very High Risk |