![]() In case of children it is used the Schwartz formula: When S Cr is expressed in mol/L, the conversion rate that should be used is 88.4 mol/L = 1 mg/dL. S Cr = the serum creatinine, either expressed in mg/dL. Note that in any case where S Cr < 0.8 mg/dL, the Mayo Quadratic Formula requires to use 0.8 mg/dL for S Cr. ■ The CKD-EPI formula is different for each of the cases presented below: Race ■ The IDMS-traceable MDRD equation formula: In case of adults there are few methods to determine GFR as they are presented below: Therefore, people with different muscle mass and the same serum creatinine levels can receive different assessments of their renal function. This method has some limitations though because it is based on a prediction of the 24h creatinine excretion rate, which is itself determined by muscle mass. Serum creatinine levels determine the clearance that is used further on to establish GFR. ![]() Creatinine is a break down product of the creatinine phosphate from muscles. The most used method in practice involves measuring serum creatinine levels. The usual methods determine GFR based on blood test results or by comparing the ingredient in a blood sample with the one in a sample of urine. This can be measured through different methods for both children and adults. ![]() This value shows how much substance from blood is filtered by the kidneys and contained in urine. Kidneys help clean blood of different waste products and toxins and transport them out of the body through urine. GFR is one of the most important indicators that provides information on overall kidney function. This is an index that represents the amount of liquid that gets filtered by the capillaries of the kidney glomerular into the Bowman's capsule during a specific time period. Once you enter the requested information the GFR calculator will be ready to offer the detailed information. In order to accomplish this task it returns the GFR value based on a few creatinine equations that will be described below. This health tool will evaluate and retrieve the overall index of kidney function for adults and children in two separate tabs by taking account of the serum creatinine level, age, sex and race.
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