In addition, the pH of the ECF affects the proportion of the total amount of calcium in the plasma which occurs in the free, or ionized form, as opposed to the fraction that is bound to protein and phosphate ions.
Ademais, o pH do FEC afecta á proporción da cantidade total de calcio no plasma que se produce en forma ionizada libre, oposta á fracción que se encontra de proteínas e ións fosfato.