Calcium Disorders

Laboratory Findings in Calcium Disorders
Ca PTH Disease PO4 25-(OH)D 1,25-(OH)2D
Hyperparathyroidism (1° and 3°) ↓ to nl
↑ or nl Familial hypocalciuric hypercalcemia nl nl
Malignancy var. var. var.
Vitamin D excess var.
Milk-alkali syndrome, thiazides nl nl
↑ Bone turnover var. var.
Pseudohypoparathyroidism nl
Vitamin D deficiency nl / ↓
Chronic renal failure (2° hyperpara) var.
var. Acute calcium sequestration var. var. var.
Hypoparathyroidism nl