FT3 – TRIIODOTHYRONINE FREE

02 Details

Why Get Tested?

To help evaluate thyroid gland function; to diagnose thyroid disease, including hyperthyroidism, and determine the cause; to monitor effectiveness of treatment of a thyroid disorder.

When to Get Tested?

When you have an abnormal TSH, particularly with a normal free T4 result, and/or signs and symptoms of hyperthyroidism.

Sample Required?

A blood sample taken from a vein in your arm.

Test Preparation Needed?

None needed; however, certain medications can interfere with the free T3 and total T3 tests, so tell your health practitioner about any drugs that you are taking.

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