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Estimates of Renal Function

Estimates of Renal Function. 3. Abbreviated MDRD Study EquationIndicated for use in patients with chronic kidney disease and:Stable functionMiddle aged patientsBlack patientsDiabetic nephropathyStatus-post kidney transplantMore accurate than Cockcroft-Gault Formula under the above condition

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Estimates of Renal Function

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    1. Estimates of Renal Function Cockcroft-Gault Formula (most commonly used) Indication: Stable kidney function Older patients General screening Creatinine Clearance = (140 – age) X weight (kg) (Cockcroft-Gault) Scr X 72 (multiply by 0.85 for women) Ideal Body Weight in kg (male) = 50 + 2.3 (Height in inches > 60) (female) = 45 + 2.3 (Height in inches > 60)

    2. Estimates of Renal Function 3. Abbreviated MDRD Study Equation Indicated for use in patients with chronic kidney disease and: Stable function Middle aged patients Black patients Diabetic nephropathy Status-post kidney transplant More accurate than Cockcroft-Gault Formula under the above conditions Underestimates CrCl in the absence of kidney disease CrCl (ml/min/1.73m squared) = 186 X (SCr in mg/dl raised to the power of -1.154) X (age raised to the power of -0.203) For females: multiply CrCl by 0.742 For Blacks: multiply CrCl by 1.210

    3. Online eGFR Calculator http://nkdep.nih.gov/professionals/gfr_calculators/idms_con.htm

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