With the standard overactive thyroid, iodine uptake into the thyroid is avid, whereas if the cells are damaged, then uptake is poor. In this way, if there is doubt about whether the patient has too much thyroid hormone because of<unk> , then measuring radio-iodine uptake or technetium uptake gives a clear cut answer as it will be higher than normal in standard thyrotoxicosis and lower than normal in de<unk> 's.
De Quervain's thyroiditis
Ord's thyroiditis
Riedel's thyroiditis
Hashimoto's thyroiditis
Subacute thyroiditis
Radiation-induced thyroiditis
Subacute lymphocytic thyroiditis
Thyroid lymphoma