Parathyroid Scan

A Parathyroid scan is a test to detect and localise overactive parathyroid gland(s).

The Procedure

The procedure involves 2 injections. The entire procedure takes about 3 hours. A first injection of a radioactive tracer is injected into a vein in the arm. After 15 minutes, pictures are taken for about 1 hour. You then wait for 1 hour in the waiting room and after that, further pictures will be taken.

We will then give you a second small injection of a radioactive tracer and further pictures are taken 15 minutes later. We also take a special low dose CT scan to improve the accuracy of our interpretation of your condition.

Side Effects

There are usually no side effects.

Please advise the Nuclear Medicine Technologist if you are pregnant or breast feeding, or unsure of your pregnancy status before commencing the procedure.

Patient Preparation


There is a small dose of radiation from the injection and therefore please inform us if you are pregnant or breast-feeding. Please bring your referral letter, any previous Thyroid scans, Ultrasound, CT or MRI scans.