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  • Title: Experience with the radioimmunoassay for parathyroid hormone in the diagnosis of primary hyperparathyroidism.
    Author: Carswell GF, Anast CS, Thompson IM, Ross G.
    Journal: Trans Am Assoc Genitourin Surg; 1977; 69():113-7. PubMed ID: 369090.
    Abstract:
    Our results with radioimmunoassay studies for parathyroid hormone performed during the last 6 years are compared retrospectively to results of the laboratory tests customarily secured when hyperparathyroidism is suspected. The results obtained in patients with known primary hyperparathyroidism and in patients with unconfirmed but presumptive hyperparathyroidism are compared to the results obtained from a group of normal controls. Despite the fact that certain discrepant results were noted in the earlier assay techniques the over-all results and, in particular, those of more recent years have been highly sensitive and reproducible corroboratives of the existence of primary hyperparathyroidism. About two-thirds of the patients with primary hyperparathyroidism will present to the urologist. All patients with calcium-containing stones should have at least 3 determinations of the serum calcium in screening for primary hyperparathyroidism. The radioimmunoassay for parathyroid hormone provides the most reliable confirmation. The patient with calculous disease, elevation of the immunoreactive parathyroid hormone level and hypercalcemia is virtually certain to have primary hyperparathyroidism.
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