Hypercalciuria

Elevated urinary calcium excretion above the normal range (men: >300 mg/day; women: >250 mg/day).

Causes

• Idiopathic hypercalciuria

• Familial hypercalciuria

• Primary hyperparathyroidism

• Hyperthyroidism

• Dietary causes

  • High sodium intake

  • High animal protein intake

  • Excess vitamin D intake

  • Excess calcium intake

• Sarcoidosis

• Renal tubular acidosis

• Bone-related causes

  • Increased bone resorption

  • Osteoporosis

  • Malignancy-associated bone destruction

  • Prolonged immobility --> bone resorption

• Loop diuretic therapy

• Corticosteroid use