**Note: All laboratory testing requires an authorizing physician. DHA Laboratory offers a patient direct program that partners you with an authorizing physician. If you have any additional questions regarding the availability of testing, please contact our laboratory by telephone or email.**
The Parathyroid Hormone (PTH), Intact test is used for the diagnosis of parathyroid disease and other diseases of calcium homeostasis, and also for monitoring patients undergoing renal dialysis.
PTH is secreted in response to a decrease in serum calcium levels by increasing the renal reabsorption of calcium and lowering reabsorption of phosphorus. The measurement of PTH is a very useful tool in the differential diagnosis and management of hypercalcemia. PTH assays can be of help in the diagnosis of tumors and hyperplasia of the parathyroid gland, as well as in localizing hyperfunctioning parathyroid tissue by assay of samples obtained via venous catheterization.
Patient Preparation: Discontinue any supplements containing Biotin for 72 hours prior to specimen collection.