Requests for free triodothyronine (Free T3, FT3)
In normal circumstances there is no need to request FT3 when assessing thyroid function or monitoring thyroxine therapy – serum FT3 concentration is often normal in hypothyroidism. Measurement of FT3 has no part to play in the diagnosis or monitoring of hypothyroidism and should not be requested when thyroid function tests are being used for […]