What is it used for?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 hormoneDiagnose hypoparathyroidism, a condition in which your parathyroid glands produce too little parathyroid hormoneFind out whether abnormal calcium levels are being caused by a problem with your parathyroid glandsMonitor kidney disease
