Infant Thyroid-Stimulating Hormone (TSH) Range
Disease description:
Recently, I heard that thyroid-stimulating hormone (TSH) may have an impact on infants. I would like to ask, what is the normal range of TSH levels in infants?
Doctor's answer (1)
Dr. Zhou Xiaofeng
Thyroid-stimulating hormone (TSH) levels in infants are an important indicator for evaluating thyroid function. Normally, TSH levels in infants may vary depending on age and the testing method used. Furthermore, the normal reference range for TSH in newborns and infants differs from that in adults.
After birth, TSH levels in newborns are typically elevated to promote thyroid development. Specifically, within the first week of life, the normal TSH range is approximately 0.7-11 mIU/L. However, this range may vary depending on the standards of different laboratories. For infants aged 1 month to 12 months, the normal reference range for TSH is typically 0.4-4.5 mIU/L. The normal TSH range for children is roughly between 0.9-8.1 mU/L. When performing TSH testing, it is important to ensure the infant is calm to minimize factors that could affect the test results.
If an infant's TSH level falls outside the normal range, further examination and evaluation may be necessary to rule out underlying conditions such as congenital thyroid dysfunction.
