Assess for fractures, if indicated
BMP, Mg/Phos, serum calcium
Vitamin D assessed by measuring this precursor to hormonally active 1,25-dihydroxyvitamin D
Normal range: 75-250 nmol/L
Insufficiency: 25-75 nmol/L
Deficiency: <25 nmol/L
Rickets
Hypocalcemia
Scurvy
Hyperparathyroidism
Pruritus ani
Hypophosphatemia
Porphyria
Malignancy