http://emedicine.medscape.com/article/2094805-overview Radioactive Iodine Uptake Testing "Radioactive Iodine Uptake Testing" "Radioactive Iodine Uptake Testing" http://emedicine.medscape.com/article/2094805-overview "Radioactive Iodine Uptake Testing" Radioactive Iodine Uptake Testing "Radioactive Iodine Uptake Testing"