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Serum 1,25-Dihydroxyvitamin D Levels in Normal Children and in Vitamin D Disorders
Russell W. Chesney, MD;
John F. Rosen, MD;
Alan J. Hamstra, MS;
Hector F. DeLuca, PhD
Am J Dis Child. 1980;134(2):135-139.
Abstract
• Using a precise assay for 1,25-dihydroxyvitamin D in serum, the levels in 103 children, aged 13 months to 16 years, were found to be 43±2 pg/mL (mean ± SE). This value is higher than reported values in adults and in neonates. Age-related changes in 1,25-dihydroxyvitamin D levels during childhood were also evident. Older children have significantly higher levels than children < 11 years, possibly indicating changes with puberty and the adolescent growth spurt. The values were significantly reduced in childhood uremia (13 ± 5 pg/mL), in hypoparathyroidism (16 ± 1 pg/ml), and in children with Fanconi's syndrome. Treatment with oral calcitriol in these three groups of patients led to increased serum levels.
(Am J Dis Child 134:135-139, 1980)
Author Affiliations
From the Department of Pediatrics (Dr Chesney) of the University of Wisconsin-Madison, School of Medicine; Department of Pediatrics (Dr Rosen), Montefiore Hospital and Medical Center, Albert Einstein College of Medicine, New York; and Department of Biochemistry (Dr DeLuca and Mr Hamstra), College of Agricultural and Life Sciences, University of Wisconsin-Madison.
Footnotes
Reprint requests to Department of Pediatrics, Clinical Sciences Center, 600 N Highland Ave, Madison, WI 53706 (Dr Chesney).
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