Free Thyroxine (FT4) Testing
How to check your Free Thyroxine levels with a home fingerprick blood test kit
What Is A Free Thyroxine Test For?
A Free Thyroxine test is also known as a FT4 test.
Thyroxine (T4) is the most prevalent thyroid hormone produced by the thyroid gland.
It is responsible for many vital roles in the body including, metabolism, heart and muscle function, brain development and bone maintenance.
Measurement of Free Thyroxine (FT4) is used to assess thyroid health.
Learn all about Free Thyroxine Testing:
Free Thyroxine Testing UK Statistics 2021
6.1% of people tested have Free Thyroxine levels which are too low.
And 2.0% have levels that are too high.
The average Free Thyroxine result is 15.1 pmol/l
Note what is normal for you may differ for your age and gender.
Women tend to have lower Free Thyroxine in their blood than men.
As many as one in nine women tested have low levels of Free Thyroxine
of people have Free Thyroxine blood levels in the normal range. Do you?
Are you in the 91.8% with normal results?
What If Free Thyroxine Test Levels Are High?
High Free T4 results along with appropriate clinical symptoms may indicate an overactive thyroid gland (hyperthyroidism).
Abnormal thyroid function can have a wide range of effects on your body and should be investigated further by your doctor.
Note, although many medicines including certain contraceptive birth control pills, epilepsy drugs, and large doses of aspirin could interfere with Total T4 test results, in general, Free T4 levels are minimally affected by these medications.
What If Free Thyroxine Test Levels Are Low?
Low free T4 results along with appropriate clinical symptoms may indicate an underactive thyroid gland (hypothyroidism).
How To Test Free Thyroxine?
The Free Thyroxine (FT4) Test allows you to accurately check your levels of Free Thyroxine in a fingerprick blood sample.
You can check your Free Thyroxine levels by buying a home fingerprick blood test kit below. Your sample is then professionally analysed in an accredited laboratory for total reassurance. The Vitall Thyroid Function Home Test Kit includes a Free Thyroxine test and is available for just £49.
Please see the following test kits: