TG and thyroiditis: on 427 participants without a previous thyroid disease the results revealed that 1.2% had clinical hypothyroidism (defined as TSH > 4.88 mIU/L and free T4 <0.79 ​​ng/dl), 5.6% had subclinical hypothyroidism (TSH >4.88 mIU/L and free T4 of 0.79 – 1.99 ng/dl) and 8.4% had autoimmune thyroiditis (identified by the presence of anti-peroxidase or anti-thyroglobulin antibodies alongside thyroid hypoechogenicity greater than grade 2) (2).