“Abstract Measurement of ionized calcium CaI ) has been reported to be dependent on albumin concentration.”
“In 17,281 outpatients and 16,194 inpatients, significantly positive correlations were found between CaI and albumin , with changes in CaI per 10 g/L change in albumin ranging from 0.007–0.043 mmol/L and 0.017–0.028 mmol/L, respectively.”