In pediatrics, eGFR is commonly calculated using the Schwartz formula, which takes into account the child's height and serum creatinine levels. The formula is:
eGFR = (k * height) / serum creatinine
Here, "k" is a constant that varies with age and sex, and height is measured in centimeters. Serum creatinine is measured in milligrams per deciliter (mg/dL). This formula provides an estimate that adjusts for the child’s growth and development.