PTH and Hypocalcemia: This supports the conclusions of Sandhu et al. that described the case of a 54-year-old HIV-positive female patient with a two-year history of persistent hypocalcaemia with a total calcium of 5.7 mg/dL (range: 8.4–10.2 mg/dL) and PTH levels of 7.6 pg/mL (range: 15–65 pg/mL) [16].