This test is for diagnosis of hypothyroidism and hyperthyroidism.
FT4 (free thyroxine) is the active form of thyroxine, released from the thyroid gland in the neck. Its role is to control metabolism - release of energy from all cells of the body. A lack of thyroxine leads to, for example, tiredness and weight gain, whereas an excess will lead to weight loss, rapid heart rate and anxiety. It is generally believed that this level (FT4) is the most reliable indicator of thyroid status - ie whether the gland is over-active (hyperthyroidism) or underactive (hypothyroidism).
Available at our clinic in London
Test Name
Free T4 (FT4) Blood Test
GP Referral
GP Referral is included
Target Turn Around Time in working days:
This private blood test for Free T4 in London has a guaranteed turnaround time of 1 working day or less and tests for Free T4 only.
Test Inclusions:
For diagnosis of hypothyroidism and hyperthyroidism.
Special Instructions
Special instructions - Please call for any special instructions while we update this test.
We Guarantee that you will receive your results in or before the stated number of working days of the longest test analysis within your pathology request. Our working days end at 5 pm. If you do not we will refund your money for the tests that are late.
