Diagnostic Studies 1

The work up for Hyperparathyroidism is usually initiated following the diagnosis of elevated calcium levels (Hypercalcemia). If further blood tests reveal an elevated Parathyroid Hormone level, Hyperparathyroidism is diagnosed.

Once diagnosed with Hyperparathyroidism, it is important to distinguish whether the elevated Parathyroid Hormone levels are caused by Primary Hyperparathyroidism or Secondary Hyperparathyroidism. In Primary Hyperparathyroidism, enlargement of one or more Parathyroid Glands is the source of the problem. In Secondary Hyperparathyroidism, another disease process (often kidney failure) leads to elevated parathyroid hormone levels.

The most effective treatment of Primary Hyperparathyroidism is surgical removal of the malfunctioning Parathyroid Gland(s). Secondary Hyperparathyroidism is usually managed by treating the underlying medical problem.

If diagnosed with Primary Hyperparathyroidism, it is very important to identify the location of the abnormal Parathyroid Gland(s). This assists in surgical planning and reduces operative time and dissection. Usually, a combination of two imaging tests is used to locate the Parathyroid Gland(s) that is causing problems:


A Parathyroid Ultrasound is a simple and safe method to examine the Parathyroid Glands. The Ultrasound uses sound waves to produce a picture of the Thyroid and Parathyroid Glands. The ultrasound machine uses high-frequency sound waves, rather than radiation, taken by a hand-held instrument maneuvered over the skin to develop a picture on a monitor.

A Parathyroid Ultrasound is used to help identify the presence, size, and location of parathyroid tumors. Parathyroid Ultrasonography is non-invasive, risk-free and painless.

Dr. Zadeh is committed to providing the highest quality and most efficient care possible so that his patients achieve fast and effective treatment. Therefore, at his office, he has access to the most advanced diagnostic technology available to expedite diagnosis. Dr. Zadeh performs his own Parathyroid Ultrasounds in the office at the time of the consultation.


Sestamibi is a specially designed radioactive compound that is absorbed by overactive Parathyroid Glands. A small dose is injected into the bloodstream and can be detected by imaging. Sestamibi Scan is the preferred method of finding the location of an abnormal parathyroid gland.