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  1. Parathyroid Hormone: What It Is, Function & Normal Levels

    Parathyroid hormone (PTH) is a hormone your parathyroid glands release to control calcium levels in your blood. It also controls phosphorus and vitamin D levels.

  2. Parathyroid Hormone (PTH) Test: High vs Low PTH Levels, Normal …

    Sep 25, 2024 · PTH is made by four tiny parathyroid glands in your neck. These glands control calcium levels in your blood. When calcium levels are too low, the glands release PTH to bring the calcium …

  3. Parathyroid Hormone (PTH) Test - MedlinePlus

    This test measures the level of parathyroid hormone (PTH) in your blood. PTH controls the level of calcium in your blood, which is key to good health. Learn more.

  4. Parathyroid hormone - Wikipedia

    PTH is secreted in response to low blood serum calcium (Ca 2+) levels and is a key regulator of bone remodeling, the continuous process of bone resorption and formation.

  5. Parathyroid Hormone (PTH) Test: Procedure, Risks ... - Healthline

    Jul 10, 2024 · A parathyroid hormone (PTH) test is a blood test that measures the amount of PTH in your blood and helps diagnose problems with calcium levels.

  6. Understanding Normal PTH Levels: What Your Parathyroid Hormone …

    Jul 7, 2025 · In this article, we’ll explain what the normal range of PTH is, what causes PTH levels to become abnormal, and why you shouldn’t rely on a single lab value to determine your health.

  7. Understanding PTH Levels: Tests, Causes, and Treatments

    Learn about parathyroid hormone (PTH) levels, their role in calcium balance, and what high or low PTH levels mean. Discover symptoms, causes, and testing options.

  8. What Is a Parathyroid Hormone Blood Test? - Verywell Health

    Sep 6, 2024 · Parathyroid hormone (abbreviated PTH) is a signaling molecule secreted from the parathyroid glands. These are usually four small glands found near the thyroid gland inside the neck. …

  9. Parathyroid hormone (PTH) | Definition, Function, & Facts - Britannica

    Dec 19, 2025 · Parathyroid hormone (PTH), substance produced and secreted by the parathyroid glands that regulates serum calcium concentration. Increased PTH secretion, known as …

  10. Overview of Parathyroid Function - MSD Manuals

    The parathyroid glands secrete parathyroid hormone (PTH), which regulates calcium levels in the blood and tissues through its effects on bones, the kidneys, and the intestine. PTH raises the level of …