How soon can I travel by airplane or mass transportation?
In these days of heightened security around the country, airports, mass transportation and border crossings have had radiation detectors installed and may be able to detect the radioiodine. You should not travel for the first 3 – 5 days after your treatment, but after that these places may still be able to detect the radioiodine for several months after your treatment. If you plan to travel, just call the Nuclear Medicine Department and we can give you a letter explaining to security why they can detect the radioiodine.