PTH (Parathyroid Hormone)
PTH (parathyroid hormone) is produced by the parathyroid glands and regulates calcium and phosphorus levels in the blood. It increases calcium levels by stimulating bone resorption and calcium absorp…
Category: Hormones
Also known as: pth, parathyroid hormone, intact pth, parathormone, ipth
Reference range: 15–65 pg/mL (Source: ABIM)
Standard unit: pg/mL
High values may indicate
High PTH levels may indicate primary hyperparathyroidism (parathyroid adenoma), secondary hyperparathyroidism (from vitamin D deficiency or chronic kidney disease), or parathyroid cancer.
Low values may indicate
Low PTH levels may indicate hypoparathyroidism (often after thyroid surgery), autoimmune parathyroid destruction, magnesium deficiency, or excessive calcium intake.
Frequently asked questions
- What is a normal PTH (Parathyroid Hormone) level?
- A typical reference range for PTH (Parathyroid Hormone) is 15–65 pg/mL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is PTH (Parathyroid Hormone) measured in?
- PTH (Parathyroid Hormone) is most commonly reported in pg/mL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do PTH (Parathyroid Hormone) reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track PTH (Parathyroid Hormone) over time?
- Yes. Upload results from any lab and BloodId charts your PTH (Parathyroid Hormone) over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
Analyze your PTH (Parathyroid Hormone) with AI