Serum Immunoreactive Parathyroid Hormone Levels Research Articles

SERUM PARATHYROID HORMONE LEVELS IN ACQUIRED VITAMIN D DEFICIENCY OF INFANCY

The later stages of the vitamin D deficiency syndrome during infancy are associated with impaired renal tubular reabsorption of amino acids, phosphate, and other metabolites. Secondary hyperparathyroidism has been implicated as the cause of the renal abnormality. Serum immunoreactive parathyroid hormone levels are elevated in infants with vitamin D deficiency (60 to 238 µl Eq/ml; normal < 40 µl q/ml). The highest levels were found in the more advanced stages of vitamin D deficiency.