Thyroglobulin 5 test can clarify the presence of hyperthyroidism or hypothyroidism, and it is recommended to consult a doctor. Thyroglobulin 5 test mainly includes five indicators: total triiodothyronine (TT3, short for total T3), total thyroxine (TT4, short for total T4), thyroid-stimulating hormone (TSH), free triiodothyronine (free T3), and free thyroxine (free T4). 1. When the levels of total T3, total T4, free T3, and free T4 are abnormally elevated and the level of thyrotropin decreases, it suggests that the patient may have hyperthyroidism. 2. The values of total T3, total T4, free T3 and free T4 are lower than normal, while the thyrotropin hormone is elevated, suggesting that the patient may have hypothyroidism. 3. Only a mild decrease in thyrotropin level and normalization of other indicators suggests that the patient may have subclinical hyperthyroidism; on the contrary, if other indicators are normal and only a mild increase in thyrotropin level suggests that subclinical hypothyroidism may exist. Once the five indicators of thyroid function are found to be abnormal, it is recommended to go to the hospital for systematic examination and treatment under the guidance of a doctor.