![]() ![]() Why is eGFR a better measure of kidney function than creatinine, or other kidney-associated markers such as BUN (blood urea nitrogen)? Mainly, because it is more sensitive. eGFR often helps in the early detection of kidney dysfunction, which is important to prevent further kidney damage. Many laboratories will automatically report eGFR when creatinine is tested. Higher creatinine = impaired kidney function. When kidney filtration rate decreases, blood levels of creatinine increase. Because muscle mass changes little from day to day, creatinine production and disposal rates are fairly constant. Kidneys filter (remove) almost all of the creatinine from the blood. ![]() Ĭreatinine is a waste product created from the normal wear and tear of muscles. It takes into account your age, gender, ethnicity/race, and your creatinine levels. The most widely used eGFR equation was developed in the year 2000 and modified in 2009. It’s called it the eGFR, or estimated Glomerular Filtration Rate. Instead, scientists have developed a formula to estimate the value indirectly. It is hard to directly measure one’s GFR.
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