Creatinine Clearance (Cockcroft-Gault Equation) Calculates CrCl according to the Cockcroft-Gault equation. CKD-EPI Equations for Glomerular Filtration Rate (GFR) Estimates GFR in CKD patients using serum creatinine, cystatin C, or both. CHA₂DS₂-VASc Score for Atrial Fibrillation Stroke Risk Calc...