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Calculating Glomerular Filtration Rate,GFR Calculator for Adults |
Your kidneys have glomeruli that help remove waste and extra water to make urine. The glomerular filtration rate shows how well the kidneys are filtering. This GFR calculator estimates glomerular filtration rate based on creatinine,race,sex and age according to the the CKD-EPI equation. It cannot be used in children, overestimates GFR in young adults. | |
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GFR Calculator for Adults | GFR Calculator for Children |
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Glomerular Filtration Rate Glomerular filtration rate(GFR)describes the flow rate of filtered fluid through the kidney. It shows how well the kidneys are filtering. Mild and moderate kidney injury is poorly inferred from serum creatinine alone. Doctors use estimated glomerular filtration rate (eGFR) to determine if you have kidney disease, and if so, what stage. In the U.S., an estimated 37 million adults may have chronic kidney disease (CKD), and the necessary steps can be taken to protect their kidney function when detected early. The CKD-EPI equation In adults, the most widely-used equations for estimating GFR from serum creatinine are the CKD-EPI equation. It was developed in 2009 by the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI),expressed as a single equation: eGFRcr = 141 x min(Scr/κ, 1)α x max(Scr/κ, 1)-1.209 x 0.993Age x 1.012 [if female]x1.159 [if black] where: Scr = serum creatinine in mg/dL κ = 0.7 (females) or 0.9 (males) α = -0.241 (female) or -0.302 (male) min(Scr/κ, 1) is the minimum of Scr/κ or 1.0 max(Scr/κ, 1) is the maximum of Scr/κ or 1.0 Age (years) |
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Stages of kidney disease Chronic kidney disease (CKD) is divided into five stages:
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