Our patient presented with acute severe asymptomatic hypercalcemia with paired corrected calcium of 3.50 mmol/L (14 mg/dL) (reference 2.1-2.6 mmol/L [8.4-10.4 mg/dL]) and PTH of 1.1 pmol/L (10.4 pg/mL) (reference 1.6-6.9 pmol/L [15.1-65.1 pg/mL]). Here, PTH is linked to hypercalcemia disease.