What does parathyroid hormone test for?

Apr 07, 2023 Source: Cainiu Health

Dr. Pan Yongyuan

Introduction

Parathyroid hormone (PTH) testing can be used to evaluate conditions such as hyperparathyroidism, hypoparathyroidism, and osteoporosis. Parathyroid hormone is secreted by the parathyroid glands and plays a role in regulating calcium and phosphorus metabolism. Therefore, measuring PTH levels in the blood helps in diagnosing hyperparathyroidism.

Parathyroid hormone (PTH) testing is generally used to evaluate conditions such as hyperparathyroidism, hypoparathyroidism, and osteoporosis. Specific analyses are as follows:

1. Hyperparathyroidism

Parathyroid hormone is secreted by the parathyroid glands and plays a role in regulating calcium and phosphorus metabolism. In patients with hyperparathyroidism, excessive secretion of PTH leads to elevated blood calcium levels and osteoporosis, among other symptoms. Therefore, measuring PTH levels in the blood can aid in diagnosing hyperparathyroidism.

2. Hypoparathyroidism

Blood tests for parathyroid hormone levels can help diagnose hypoparathyroidism. In patients with this condition, PTH levels are typically decreased or absent, whereas in other diseases or in healthy individuals, PTH levels are usually normal or slightly elevated.

3. Osteoporosis

Measuring blood levels of parathyroid hormone can assist in diagnosing osteoporosis. In patients with osteoporosis, PTH levels are often elevated because the parathyroid glands secrete more PTH to promote calcium absorption and release, thereby maintaining calcium balance in the blood. However, prolonged high levels of PTH contribute to the development and progression of osteoporosis.

In addition, parathyroid hormone testing may also help identify other conditions such as rickets and osteomalacia, which require timely treatment.

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