The severity of elevated thyroid stimulating hormone to 6.1 uIU/mL in women requires an assessment of the presence of abnormalities in other thyroid hormone levels. If thyroid function is normal, the presence of subclinical hypothyroidism can be considered a slightly more serious condition, and it is important to be vigilant for the possibility of conversion to hypothyroidism. Normal levels of thyroid stimulating hormone are between 0.35 and 5.5 uIU/mL in adults. When thyrotropin levels are elevated, free and total thyroid hormone levels are first evaluated; the presence of subclinical hypothyroidism is considered when free and total thyroid hormone levels are normal and only elevated thyrotropin levels are present alone. For patients with subclinical hypothyroidism, the first consideration is that it is related to Hashimoto’s thyroid inflammation, and it is necessary to observe the levels of thyroid peroxidase antibody and globulin antibody, which are significantly increased, and it is considered that there is Hashimoto’s thyroid inflammation that leads to subclinical hypothyroidism. For patients with subclinical hypothyroidism, it is important to regularly evaluate thyroid hormone levels, and if thyroid stimulating hormone levels are greater than or equal to 10uIU/mL, the use of levothyroxine may be considered as an intervention, and the disease should be treated in the endocrinology department of a regular hospital.