Thyroid function tests (TFTs) are a group of blood tests (measuring TSH, T4, T3) used to check the function of the thyroid.
TFTs can be used to diagnose thyroid disease and to monitor treatment (thyroid suppression or thyroid hormone replacement).
Thyroid antibodies may also be tested.
NICE CKS - Hypothyroidism
NICE CKS - Hyperthyroidism
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