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

    What is parathyroid hormone? Parathyroid hormone (PTH) is a hormone that your parathyroid glands make and release to control the level of calcium in your blood, not your bones.

  2. Parathyroid hormone - Wikipedia

    Parathyroid hormone (PTH), also known as parathormone or parathyrin, is a peptide hormone secreted by the parathyroid glands. It plays a critical role in regulating serum calcium and phosphate levels …

  3. 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 …

  4. Parathyroid hormone | Hormones

    Parathyroid hormone is secreted by the parathyroid glands and is the most important regulator of blood calcium levels.

  5. Hyperparathyroidism - Symptoms & causes - Mayo Clinic

    Sep 19, 2025 · When there's not enough calcium in the blood, the parathyroid glands typically make more parathyroid hormone. The hormone triggers a release of calcium from the bones.

  6. Overview of Parathyroid Function - The Merck 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 …

  7. The Parathyroid Glands - Johns Hopkins Medicine

    Parathyroid glands produce parathyroid hormone, which plays a key role in the regulation of calcium levels in the blood. Precise calcium levels are important in the human body, since small changes can …

  8. Parathyroid Disease | Hyperparathyroidism | MedlinePlus

    Dec 12, 2024 · The parathyroid glands make parathyroid hormone (PTH), which helps your body keep the right balance of calcium and phosphorous. If your parathyroid glands make too much or too little …

  9. 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 …

  10. Parathyroid Disease: Symptoms, Causes, Treatments - UChicago …

    When the level of these minerals rise or fall below normal, these four tiny glands adjust the amount of parathyroid hormone (PTH) they secrete. When more of this hormone is circulating, the bones …