Your doctor does a blood test to check your parathyroid hormone (PTH) level. A high level of PTH is the main sign of this condition.

A routine blood test showing a high calcium level is often the first sign of hyperparathyroidism.

Routine checkups

When you have hyperparathyroidism, it's important to have regular checkups. Tests can include:

• Blood tests of your calcium and PTH levels to see if your condition is the same or getting worse.
• DXA tests. The DXA is an X-ray test that measures bone density. It is used to see if your bones are getting thin and brittle, which means they could break more easily.
• Urine tests to see if your kidneys are being affected and if they might form kidney stones.
• Imaging tests to look for kidney problems.