The formula for calculation of eGFR requires which four parameters?

The correct choice is based on the essential parameters used to estimate the glomerular filtration rate (eGFR), which is a key indicator of kidney function. The formula for eGFR typically includes serum creatinine, age, gender, and race.

Serum creatinine is a waste product that is filtered by the kidneys; its level in the blood is crucial for assessing kidney function. Age is factored into the equation because kidney function usually declines with age. Gender is included as males usually have a higher muscle mass than females, affecting serum creatinine levels. Lastly, race is considered because differences in muscle mass and body composition can influence creatinine levels among different racial groups.

The other options incorporate parameters that are not standardly required for eGFR calculation. Height and weight are not directly included in the most common eGFR equations. Blood pressure and serum electrolytes, while important in other contexts of overall health and kidney function, do not play a role in the direct calculation of eGFR.