Thyroid profile Free includes thyroid hormones Free T3, Free T4 & TSH which helps to evaluate the functioning of thyroid gland in the body. This profile indicates whether thyroid gland is under-functioning or over-functioning or the function is normal. It also helps to monitor patients who are on treatment for thyroid disease. Persons at high risk of thyroid disease are newborns, those with a strong family history of thyroid disease, the elderly population, women 4 to 8 weeks after delivery, patients with autoimmune diseases and those on iodine deficient diet.