A PTH test is most often used along with calcium testing to: Diagnose hyperparathyroidism, a condition in which your parathyroid glands produce too much parathyroid hormone.

SPECIMEN: 3 mL (1.5 mL min.) serum from 1 SST drawn between 8-10 am in a fasting condition. Allow blood to clot. Separate serum and freeze within 30 minutes. Ship frozen. DO NOT THAW. Hemolysed samples not acceptable.
STABILITY: Room: NA; Refrigerated: NA; Frozen: 4 weeks
REPORT: Daily
INSTRUCTIONS: No special preparation required.
USAGE: This assay is useful for diagnosis and differential diagnosis of hypercalcemia. It also helps in the diagnosis of Primary / Secondary / Tertiary Hyperparathyroidism and Hypoparathyroidism. The assay may be useful in monitoring End-stage renal failure patients for possible Renal osteodystrophy.