Glomerular filtration rate
Also known as: GFR
Kidney function is assessed by evaluating how effectively the kidneys purify the blood. The glomerular filtration rate (GFR) serves as an excellent method for determining a patient’s stage of kidney disease. A key factor in estimating the GFR is measuring the level of creatinine in the blood. Your doctor will order blood tests to determine your serum creatinine levels. Creatinine is a waste product generated by muscle activity. In the presence of functioning kidneys, creatinine is efficiently removed from the bloodstream. However, as kidney function declines, blood levels of creatinine tend to rise.
To estimate the GFR, a mathematical equation is employed, taking into account factors such as serum creatinine levels, age, race, and gender. Occasionally, additional variables like weight, blood urea nitrogen (BUN), and serum albumin may be considered to determine the patient’s GFR level. Once the GFR level is ascertained, it aids in identifying the stage of kidney disease.