血钙过少

例句：

1. 1. He was diagnosed with hypocalcemia and required treatment immediately.
   他被诊断出患有低血钙症，需要立即治疗。
2. 2. The patient's blood calcium levels were very low, which could be a sign of hypocalcemia.
   患者的血钙水平非常低，这可能是低血钙症的迹象。
3. 3. Hypocalcemia can lead to serious health problems if left untreated.
   如果不治疗，低血钙症可能会导致严重的健康问题。