I've had multinodular goiter for over 15 years. One large in left lobe of 2.2. cm with vascularity. TSH was 0.45. t3 and T4 normal. Raiu scan showed 6hr uptake of 24.1% and 24 hr uptake of 57.5%. It Said no focal areas of abnormal activity detected. Distribution of radionuclide is uniform and symmetric. No extra thyroidal accumulations are seen. There is no focal lesion to indicate hyper functioning nodule. Does this mean I have cold nodules? If not what does it mean?