An in depth test to evaluate whole body sufficiency for Iodine. After ingesting a 50mg Iodoral® tablet, urine is collected for 24 hours. With this test, Iodine sufficiency is determined by comparing the amount of Iodine taken to the amount excreted in the urine. Whole body Iodine sufficiency is reached when 90% or more of the ingested amount is excreted in the urine. **Before participating in this evaluation, discuss any history of thyroid surgery and/or radiation, Hashimoto disease, and any previous problems with your thyroid with you health care provider**