INTACT PARATHYROID HORMONE

Test Code

PTHI

CPT Codes
83970

Includes

Intact Parathyroid Hormone, Calcium, Creatinine, Phosphorus

Preferred Specimen

Light Green Gel

Other Acceptable Specimens

Gold top tube

Specimen Stability

4 hours room temp, 2 days refrigerated

Clinical Significance

In vitro diagnostic immunoassay for the quantitative determination of intact parathyroid hormone in human plasma used in the differential diagnosis of hypercalcemia and hypocalcemia and to assist in distinguishing patients with hyperparathyroidism, hypoparathyroidism, or hypercalcemia of malignancy, and can be used to assess and manage other metabolic bone disorders including osteoporosis and renal osteodystrophy. Additionally, this test can be used intra-operatively in conjunction pre-operative localization methods to control the success of parathyroidectomy for both primary and renal hyperparathyroidism. PTH (or parathormoneor parathyrin) is the most important endocrine regulator of circulating calcium and phosphorus, secreted by the parathyroid glands. Its contribution to calcium homeostasis is accomplished through its effect on bone, kidney, and intestine.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.