In children, tubular secretion involves several steps:
1. Filtration: Blood is filtered through the glomerulus. 2. Secretion: Active transport mechanisms move substances like hydrogen ions, potassium, and organic acids from the blood into the tubular fluid. 3. Excretion: These substances are eventually excreted in urine.
Given their developing kidneys, children may have different rates of secretion compared to adults, influencing drug dosing and toxicity.
