PTH and Hypocalcemia: Biological analyses revealed hypoparathyroidism with severe hypocalcemia: serum calcium level at 39 mg/l, serum phosphate level at 75 mg/l, magnesium level at 17 mg/l, PTH level at 5.5 pg/ml, 25-hydroxy vitamin D level at 7.7 ng/ml, alkaline phosphatase (ALPn) level at 235 IU/L, and urinary calcium/creatinine ratio at 0.20 mmol/L.