The normal value of Neonatal Thyrotropin is usually 3 to 9mU/L, which may vary with different testing reagents. Neonatal thyroid stimulating hormone is a hormone secreted by the pituitary gland, which can effectively promote the secretion of thyroid gland, thyroxine and thus promote the growth and development of newborn babies, usually the normal value range is 3 to 9 mU/L. However, there may be some differences in the test reagents produced by different manufacturers, and the specific should be based on the reference range. If it is below or above the normal range, it may be caused by disease. Below the normal range, it is likely to be hyperthyroidism while above the normal range is considered to be caused by hypothyroidism. Thyroid stimulation is not within the normal range, need to cooperate with the doctor to take further examination, clear diagnosis and targeted treatment, in addition to the need for regular follow-up. If necessary, adjust the dose of medication.