Hi & Welcome. Incomplete data like age, gender, purpose of doing thyroid function tests, any symptoms, etc ??? Thyroid stimulating hormone (TSH) is produced when the hypothalamus releases a substance called thyrotropin-releasing hormone (TRH). TRH then triggers the pituitary gland to release TSH. TSH causes the thyroid gland to make two hormones: triiodothyronine (T3) and thyroxine (T4). T3 and T4 help control your body s metabolism. A TSH test is often performed to determine the underlying cause of abnormal thyroid hormone levels. It’s also used to screen for an underactive or overactive thyroid gland. High TSH levels may be caused by an underactive thyroid (hypothyroidism), a pituitary gland tumor that is making too much TSH or inadequate dose of Levothyroxine for treatment of an under active thyroid gland. Based on the given result of thyroid function tests you seem to be suffering from sub-clinical hypothyroidism (under active thyroid gland). You are advised to consult a physician/endocrinologist for further evaluation. Your doctor would also recommend certain additional tests such as anti-thyroid antibodies to rule out the possibility of auto immune disease Hashimoto’s disease involving thyroid gland. The doctor would prescribe you Levothyroxine in the initial doses of 25 to 50 micro gram/day. Then after 6-8 weeks the dose can be adjusted depending upon the TSH level which should be kept in the normal range of 0.5-3 mU/mL. The dosage of Levothyroxine should be increased if the TSH level remains above normal and should be decreased if the TSH level falls below normal. Once the correct dosage of Levothyroxine is established, the frequency of TSH measurement may be decreased to every 6 to 12 months. Hope to have answered your queries. Wishing you best of your health. A feed back is highly appreciated.