Table of Contents

## Which eGFR formula is more accurate?

A laboratory that reports eGFR numeric values > 60 mL/min/1.73 m2 should use the CKD-EPI equation, because the CKD-EPI equation is more accurate for values > 60 mL/min/1.73 m2 than is the MDRD Study equation.

**What is the most accurate GFR calculator?**

Of these five equations, CKD-EPI equation is known to have the highest accuracy in estimating GFR and is currently recommended for use to estimate GFR by the 2012 Kidney Disease: Improving Global Outcomes (KDIGO) clinical practice guidelines10.

### Is Cockcroft Gault formula accurate?

The Cockcroft and Gault formula was further shown to be a reliable estimate of GFR in twelve studies comparing the results of the estimate with methods giving true GFR values (inulin; 2 studies with 196 patients) or more accurate GFR values (10 studies with 1218 patients; 3 studies with 99m-Tc-DPTA; 4 studies with 51Cr …

**What is the MDRD formula?**

Notes: The original Modification of Diet in Renal Disease (MDRD) equation was based on 6 variables: age, sex, ethnicity, serum creatinine, urea, and albumin (often referred to as MDRD 6). Subsequently, the MDR was simplified to a 4-variable version (MDRD-4) that included age, sex, ethnicity, and serum creatinine.

## What is the most common method of estimating GFR?

The standard way to estimate GFR is with a simple blood test that measures your creatinine levels. Creatinine is a waste product that comes from the digestion of dietary protein and the normal breakdown of muscle tissue.

**What is MDRD GFR?**

Estimates glomerular filtration rate based on creatinine and patient characteristics.

### When do you not use Cockcroft-Gault equation?

The Cockcroft-Gault (CG) formula is provided on this website for research purposes only. It should not be used for drug dosing or to estimate GFR. The best way to determine drug dosing is with the CKD-EPI Creatinine Equation (2009) or the MDRD Study. Both have been shown to be more accurate than the CG formula.

**When do you use the Cockcroft-Gault equation?**

Creatinine Clearance (Cockcroft-Gault Equation)

- Can be used to estimate kidney function for CKD staging.
- Can be used to adjust or discontinue medications based on kidney function.

## How do you calculate glomerular filtration rate?

An estimate of the normal value for your GFR can be obtained by using the equation: GFR = 140 – [your age]. For example, if you are a fit, healthy 30 yr old, your GFR should be approximately 110mls/min.

**What is MDRD stand for?**

This calculator uses the abbreviated MDRD equation (MDRD = Modification of Diet in Renal Disease Study), which is the one recommended by NICE and The Renal Association (UK). See the accompanying clinical record Assessing Kidney Function. Estimated Glomerular Filtration Rate Calculator. Abbreviated MDRD Equation.

### Which one of the following is the recommended method for estimating glomerular filtration rate in clinical practice?

Estimated GFR (eGFR) calculated by serum creatinine and/or cystatin C remains the most widely used method in clinical practice and epidemiologic research.

**What is the gold standard for measuring GFR?**

The gold standard for measuring GFR is using plasma or urinary clearance of an exogenous filtration marker. However, this is a complex procedure and generally not routinely performed.

## How do you measure GFR accurately?

**Why is CKD EPI better than MDRD?**

The CKD-EPI equation, a newly developed equation for estimating GFR, has been proposed to be more accurate than the MDRD equation, especially when GFR is high. Moreover, it shows less bias, improved precision, and greater accuracy[8].