Thyroxine (T4) is the main hormone produced by the thyroid. A Total T4 test measures the overall level of T4 output by the thyroid gland.
Free T4 affects tissue function in the body, while bound T4 does not. This test is often used in congunction with TSH testing to measure the extent of hyper- or hypothyroidism.
Up to 10% of the population in the U.S. has iodine deficiency. Iodine is essential in healthy thyroid hormone production, brain function, breast tissue, fetal development and more.
For people requiring routine thyroid screening plus an assessment of iodine status and total thyroxine production by the thyroid gland
Thyroid testing plus Elements testing. Allows your practitioner to see if you have too little or too much iodine and other nutrients essential for thyroid health. Also tests for overexposure to mercury, bromine, lithium, arsenic and cadmium- any of which can affect the thyroid.