Thyrotropin 4.9 μIU/ml is within the normal range and is usually not serious, but requires regular follow-up observation. The normal range of thyrotropin is 0.35 to 5.5 μIU/ml, so thyrotropin 4.9 μIU/ml is still in the normal range. Patients with a thyrotropin level of 4.9 μIU/ml usually do not show any abnormal symptoms, and only need to be followed up and observed, and then dealt with when abnormal thyrotropin levels are detected. When high thyroid stimulating hormone levels are detected, the patient should be actively investigated for diseases that may cause elevated thyroid stimulating hormone, such as hypothyroidism, Hashimoto’s thyroiditis, etc. The cause of the disease can be clarified with the help of ultrasonography, thyroid function tests, and pathological biopsies of the thyroid gland by puncture. Patients with thyroid stimulating hormone 4.9μIU/ml can improve the examination under the doctor’s guidance to clarify the presence or absence of thyroid disease, and follow up or treat according to the doctor’s advice.