By subclinical Hashimoto thyroiditis patients have raised TSH level and normal level of serum thyroid hormones. In most of the cases increased antibodies are also present. Those patients are more opt to coronary heart disease, psychiatric disorders, and pregnancy problems.
Diagnosing on time those subclinical cases with slight hypothyroidism and properly treating them is essential in order to slow down the progression of the disease and
But how to spot those subclinical cases if there is still debate about what is the reference range of the normal TSH?
Recent study shows that a significant increase in the prevalence of Hashimoto thyroditis occurred among individuals with a TSH of 2.6–2.9 mU/L and determines this cut-off value of normal upper limit of TSH.