Usually laboratory testing does not include ionized calcium. Total calcium must be adjusted according to the albumin level. Albumin-corrected total calcium is calculated as follows:
Corrected total calcium = measured total calcium + 0.8 (4.0–serum albumin) Calcium is measured in mg/dL, and albumin is measured in g/dL.
Supplement with 500–1,000 mg of elemental calcium three times per day and adjust the dose to control symptoms and achieve the target calcium level. At least in severe cases, 1 to 2 g of elemental calcium three times daily is generally required.