Variation in Thyroid Hormones Level among People of Different Age, Gender and Seasons, Piparia, Gujarat

Background: Thyroid is an endocrine gland located below the larynx. The principal thyroid hormones are thyroxine (T4), tri-iodothyroxine (T3). The current study was carried out to investigate the impact of age, gender and seasons on the level of Thyroxine (T4), Triiodothyronine (T3) and Thyroid Stimulating Hormone in individuals free of thyroid diseases. Methods: - Serum levels of T3, T4 and TSH in 198 individuals attending Dhiraj General Hospital in different seasons were examined. Hormonal assay was done by using AIA 360 immunoassay. Results: - Levels of T3, T4 and TSH ranged from 0.98-4.8ng/dl, 0.56-3-25ng/dl and 0.01-5.3?IU/L. There is significant change in thyroid hormone levels in both genders of different age group in different seasons. Conclusion:- It is concluded that the age, gender and seasons have an appreciable effects on the levels T3, T4 and TSH.