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Neonatal TSH

Published: July 27, 2026Updated: August 25, 2026

Neonatal TSH (Thyroid Stimulating Hormone) measures the level of TSH in newborn babies to screen for congenital hypothyroidism.

Quick summary

TSH screening in newborns helps detect congenital hypothyroidism.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

Units
mIU/L
Clinical utility
screening
Result kind
quantitative
FDA-cleared
Roche TSH Neonatal, PerkinElmer TSH Neonatal, Wallac TSH Neonatal
interpretation: {"text":"TSH levels between 0–10 mIU/L indicate normal thyroid function.","label":"Normal"}; {"text":"TSH levels above 10 mIU/L may suggest congenital hypothyroidism and require further evaluation.","label":"Elevated"}

Neonatal TSH testing is a crucial screening tool used to identify congenital hypothyroidism in newborn infants. This condition, if left untreated, can lead to serious developmental issues and intellectual disabilities.

The test involves measuring the levels of Thyroid Stimulating Hormone (TSH) in the blood. Elevated TSH levels typically indicate an underactive thyroid gland.

Early detection and treatment of congenital hypothyroidism through neonatal TSH screening can prevent developmental delays and promote healthy growth in infants.

Frequently asked questions

Why is neonatal TSH screening important?
Neonatal TSH screening is important because it helps in the early detection of congenital hypothyroidism, which can prevent developmental issues if treated promptly.
What happens if the TSH levels are high?
If TSH levels are high, further diagnostic tests will be conducted to confirm congenital hypothyroidism, and treatment with thyroid hormone replacement will be initiated.
  1. 1
    American Thyroid Association: Newborn Screening for Congenital HypothyroidismSource
  2. 2
    Mayo Clinic: Congenital HypothyroidismSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy