Description

A parathyroid hormone (PTH) and calcium test measures the amount of PTH in your blood and compares it to your calcium levels to help determine if your parathyroid glands are working properly

• PTH test: Measures the amount of PTH in your blood. PTH is a protein hormone produced by the parathyroid glands, which are four small glands located behind the thyroid gland. 
• Calcium test: Measures the amount of calcium in your blood. 

A doctor might order a PTH and calcium test if:

• You have abnormal calcium levels
• You have symptoms of hypercalcemia or hypocalcemia
• You have a condition that may involve the parathyroid gland 

The results of a PTH and calcium test can help identify conditions like hyperparathyroidism or hypoparathyroidism. They can also help determine if chronic kidney disease is a factor.

Fasting not required.