Comparison of intestinal calcium absorption and circulating 1,25-dihydroxyvitamin D levels in malignancy-associated hypercalcaemia and primary hyperparathyroidism.

@article{Ralston1987ComparisonOI,
  title={Comparison of intestinal calcium absorption and circulating 1,25-dihydroxyvitamin D levels in malignancy-associated hypercalcaemia and primary hyperparathyroidism.},
  author={Stuart H. Ralston and Robert A. McTaggart Cowan and Mary D. Gardner and W. D. Fraser and Ernest Marshall and Iain T. Boyle},
  journal={Clinical endocrinology},
  year={1987},
  volume={26 3},
  pages={281-91}
}
The relation between circulating 1,25-dihydroxyvitamin D (1,25(OH)2D) levels and intestinal calcium absorption--as determined by an oral calcium load test--was studied in 16 patients with hypercalcaemia of malignancy (HM) and 16 with hypercalcaemic primary parathyroidism (HPT). In the HPT group serum calcium rose significantly after the oral calcium load and the increment correlated significantly with 1,25(OH)2D levels. While 1,25(OH)2D levels were raised to within the hyperparathyroid range in… CONTINUE READING