The Iodine 24hr urine test may be used to evaluate iodine deficiency disorders or monitor exposure to iodine and it may also be used to help diagnose iodine-induced hypothyroidism, hyperthyroidism or autoimmune thyroid diseases such as Hashimoto's Thyroiditis.  Also used to monitor exposure to iodine; evaluate for iodine deficiency disorders (IDDs), excessive iodine intake, or iodine in the workplace.