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Albumin-Corrected Calcium

Approximate total calcium correction when albumin is abnormal.

Formula:

Corrected Calcium = Total Calcium + 0.8 × (4.0 - Albumin)

Interpretation:

Assessment of albumin-corrected calcium.

Total calcium mg/dL

Albumin g/dL

Units

Calcium mg/dL + Albumin g/dL Calcium mmol/L + Albumin g/L

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Clinical importance

Corrected calcium can better reflect active ionized calcium when albumin is abnormal.
It supports assessment of parathyroid function.
It helps classify hypo- and hypercalcemia in the right clinical context.
It is useful for monitoring calcium and vitamin D treatment.

Common causes of hypercalcemia

Prolonged immobilization
Vitamin D toxicity
Malignancy
Primary hyperparathyroidism

Common causes of hypocalcemia

Malabsorption
Kidney dysfunction
Vitamin D deficiency
Hypoparathyroidism

Note: MedicalC is NOT medical software and does NOT issue diagnoses or treatment recommendations. The calculators are for educational and informational purposes, use published medical formulas, and are not a substitute for medical consultation. Results should be interpreted by professionals.Read the full disclaimer.