St John A, Davies C, Riley W J, Kent G N, Brown R C, Aston J P, Weeks I, Woodhead J S
Department of Biochemistry, Royal Perth Hospital, Western Australia.
Clin Chim Acta. 1988 Dec 15;178(2):215-23. doi: 10.1016/0009-8981(88)90227-6.
A comparison of the performance of a two-site immunochemiluminometric assay for intact parathyroid hormone with that of an in-house radioimmunoassay for carboxy terminal parathyroid hormone has been performed on samples from unselected patients being investigated for hypercalcaemia. The intact parathyroid hormone assay was found to be a simple and robust technique with a broad working assay range (CV less than 10% between 1.8-212 pmol/l) and a detection limit of 0.2 pmol/l. Clinically it is superior to the carboxy terminal assay in its ability to distinguish between patients with hyperparathyroidism from those with other causes of hypercalcaemia especially in the presence of impaired renal function.
