ALB and hypercalcemia disease: What is more noteworthy is that even mild hypocalcemia (≥7.5–<8.5 mg/dl) or hypercalcemia (≥10.3–<12 mg/dl) has predicted to increase 10%–20% risk of 30-day mortality when the albumin-corrected calcium level increases by 1 mg/dl in ICU patients.