How to Prepare for a Thyroid Uptake & Scan

You should not have any food from midnight the night before the exam to the exam time.

Women who are pregnant or breastfeeding should inform the technologist immediately when arriving to the appointment.

Medications taken for the thyroid (thyroid hormones or anti-thyroid drugs) should be stopped prior to performing this exam. Additionally, any imaging that has been performed with contrast agents should be at least 6 weeks prior to this imaging.

Below is a generalized list of thyroid medications and when they should be stopped:

3 Months

  • Oral cholecystographic agents (Cystografen, Isovue)

6 Weeks

  • IV contrast agents (CT & X-ray injections)

10 Days

  • Thyroid extract (T4), levothyroxine (Synthroid, Proloid, Eltroxin, Levo-t, Levoxyl, Levothroid)

3 Days

  • Tri-iodothronine (T3), liothronine (Cytomel or Triostat)

Table salt should be avoided the day before, the day of, and the day after the imaging.

Seafood should be avoided the day before, the day of, and the day after imaging as well.

Feel free to bring an MP3/portable music player or your favorite CD (we have a CD player)