In this video, Dr. Parag Singhal, Endocrinologist, UK will discuss about the tests required for enlargement of thyroid gland. Enlargement of thyroid is very common in endemic areas where there is iodine deficiency. A general practitioner should ask for the following tests: thyroid profile and antibodies. He will further explain about underactive and overactive thyroid gland. The GP should ideally refer the patient to a specialist.