The parathyroid hormone (PTH) test is a blood test that measures the level of parathyroid hormone in the blood. PTH is a hormone produced by the parathyroid glands, which are located in the neck and play a key role in regulating calcium levels in the body.
The PTH test is often used to diagnose and monitor conditions that affect calcium levels, such as hyperparathyroidism, hypoparathyroidism, chronic kidney disease, and vitamin D deficiency. Abnormal levels of PTH can indicate an imbalance in calcium levels, which can lead to symptoms such as weakness, fatigue, bone pain, and kidney stones.
If your healthcare provider suspects that you have a parathyroid disorder, they may order a PTH test along with other tests, such as calcium and vitamin D levels, to help make a diagnosis. The results of the PTH test can help guide treatment decisions and monitor the effectiveness of treatment over time.
It is important to follow any instructions from your test provider before undergoing a PTH test, such as fasting before the test or avoiding certain medications that can affect the results.
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