Test Background PTH is a major contributor to regulation of circulating calcium. Primary hyperparathyroidism occurs due to adenoma/carcinoma or hyperplastic syndromes and leads to hypercalcaemia. Secondary hyperparathyroidism can occur in renal failure.
Clinical Indications Suspected hyperparathyroidism or hypoparathyroidism
Differential diagnosis of hypercalcaemia
Differential diagnosis of bone disease
Assessment of parathyroid following surgical resection of the thyroid gland