Abstract
To evaluate the role of parathyroids in calculus disease, the parathyroid hormone levels were determined in 22 control subjects and 42 stone (14 with bladder stone and 28 with kidney stone) patients. Serum calcium, inorganic phosphate, alkaline phosphatase and parathyroid hormone and urinary excretion of calcium and inorganic phosphate were determined. It was found that normocalcemic and normocalciuric stone patients had slightly higher levels of parathyroid hormone (irrespective of the site of the stone) and the difference was not statistically significant as compared with control subjects although some of the patients with calculus disease were hyperparathyroid. Serum alkaline phosphatase was increased while there was an increase in urinary calcium excretion in kidney stone patients and oxalate in all patients as compared with control subjects. The increase in inorganic phosphate was, however, not different from the control subjects. The subclinical hyperparathyroidism and stone formation in these patients are not correlated.
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