Thyroid Screen (FT4 & TSH)
Thyroid Screen (FT4 & TSH)
Thyroid Screening (Free T4,TSH)
Free thyroxine (free T4) tests are used to help evaluate thyroid function and diagnose thyroid diseases, including hyperthyroidism and hypothyroidism, usually after discovering that the thyroid stimulating hormone (TSH) level is abnormal. Blood tests can measure total T4, free T4, total T3, or free T3