evaluation? This is required to diagnose the exact disease which is causing the hypothyroidism. It could be a hereditary autoimmune disease like Hashimoto's Thyroiditis. Some of these diseases may turn cancerous at a later stage.
Please go to an NABL accredited laboratory in your city after 12 hours fasting(have early supper the previous night, and on empty stomach take your present dose of thyronorm), get the following tests done:
FT3, FT4,
TSH, TPO, ATG, USG-
Thyroid. Then get back to me via Practo's Direct Teleconsultation.
This set of tests is done only once in a lifetime. You may also need a Nuclear scanning of thyroid at a later stage.
A another colleague mentioned, once in 3 months, you need to get only TSH levels tested(always after 12 hours fasting, and always at same NABL accredited laboratory) and an USG-Thyroid every year to help me adjust your Thyronorm requirements accurately and to predict the possibility of cancerous development at an early stage so as to advise you to surgically remove the thyroid before it can harm you.