Why get tested?
To screen for and diagnose thyroid disorders; to monitor treatment of hypothyroidism and hyperthyroidism

When to get tested?
For screening: All newborns are screened for congenital hypothyroidism. There is currently no recommendation in the UK for routine screening of adults
For monitoring treatment: as directed by your doctor
Otherwise: when a patient has symptoms of hypo- or hyperthyroidism and/or an enlarged thyroid

Sample required?
A blood sample taken from a vein in the arm. For neonatal screening blood is collected by pricking the heel