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Evaluation of the intact hormone assay in the study of parathyroid autograft function
Parathyroid autograft function was studied using radioimmunoassay measuring intact parathormone (iPTH) and C-terminal PTH (C-PTH). Blood samples were taken from graft and non-graft arms pre- and post-dialysis. The intact assay showed an appreciably greater differential gradient pre- and post-dialysis than the C-terminal assay. We conclude that particularly in patients with chronic renal failure the intact assay is of greater value in monitoring graft function than the commonly used C-terminal assay. It may also be of value in distinguishing between graft overactivity and ectopic cervical parathyroid tissue in cases of recurrent hyperparathyroidism following apparently total parathyroidectomy and autotransplantation.
Parathyroid autograft function was studied using radioimmunoassay measuring intact parathormone (iPTH) and C-terminal PTH (C-PTH). Blood samples were taken from graft and non-graft arms pre- and post-dialysis. The intact assay showed an appreciably greater differential gradient pre- and post-dialysis than the C-terminal assay. We conclude that particularly in patients with chronic renal failure the intact assay is of greater value in monitoring graft function than the commonly used C-terminal assay. It may also be of value in distinguishing between graft overactivity and ectopic cervical parathyroid tissue in cases of recurrent hyperparathyroidism following apparently total parathyroidectomy and autotransplantation.