At a glance
Tests Included in Thyroid Function Test (TFT)
What is it?
A Thyroid Function Test measures free T3, free T4 and thyroid-stimulating hormone (TSH) in your blood. Together, these results help assess thyroid activity and support the diagnosis or monitoring of an underactive or overactive thyroid.
When is it needed?
Preparation
Fasting is usually not required unless other blood tests are booked with it. Follow the instructions given at booking.
