Re: What to expect during thyroid scan?
A thyroid scan is nothing to be alarmed about. It sounds like you are having an uptake and scan if you have 2 appointments. In our department you will come in the first day and take a capsule that contains a small amount of a radioisotope. Some places will then measure your uptake in your thyroid of that capsule at 4 hours and 24 hours others will just measure it at 24 hours. we do it at 24 hours where I work. Typically a short "uptake" measurement is taken either with a camera or a measuring probe over your neck, next a measurement is taken over your leg to give an indication of what is in the rest of your body. Next, actual pictures of your thyroid will be done. Sometimes pictures can be done from the capsule you took the day before (mainly only if your uptake was extremely high...hyperthyroid) otherwise you will need a small injection of another radioisotope that allows us to get good images of the thyroid. The pictures will be done after that. Some places may only take 1 image and others will take up to 4 taking around 5 mins each. They will be looking at the size shape and distribution of the radioisotope. If there are nodules they will be looking to see if any are "cold" or 'hot" which can help determine the diagnosis. There are no side effects to the test and truly nothing to worry about. Hope this helps....good luck