Thyroxine (FT4) Testing

How to check your Thyroxine levels with a home fingerprick blood test kit

What Is A Thyroxine Test For?

A Thyroxine test is also known as a FT4 or Free Thyroxine test.

The Thyroxine (FT4) Test allows you to accurately check your levels of Thyroxine in a fingerprick blood sample.

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.

What If Thyroxine Test Levels Are High?

What If Thyroxine Test Levels Are High?

High free T4 results along with appropriate clinical symptoms may indicate an overactive thyroid gland (hyperthyroidism).

Many medicines including , certain types of contraceptive birth control pills, those drugs used to help control epilepsy and large doses of aspirin could interfere with total T4 test results, so tell your doctor about any drugs you are taking. In general, free T4 levels are minimally affected by these medications, another reason why FT4 is routinely used to assess thyroid function.

What If Thyroxine Test Levels Are Low?

What If Thyroxine Test Levels Are Low?

Low free T4 results along with appropriate clinical symptoms may indicate an underactive thyroid gland (hypothyroidism).

Many medicines including , certain types of contraceptive birth control pills, those drugs used to help control epilepsy and large doses of aspirin could interfere with total T4 test results, so tell your doctor about any drugs you are taking. In general, free T4 levels are minimally affected by these medications, another reason why FT4 is routinely used to assess thyroid function.

How To Test Thyroxine?

Health testing for Thyroxine levels in your blood

You can check your Thyroxine levels by buying a home fingerprick blood test kit from just £89 using the following test kits:

Other Biomarkers Often Tested With Thyroxine

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