Why is this test important? This thyroid function blood test measures the amount of Tri-iodothyronine or T3(in your blood. T3 is one of two major hormones produced by the thyroid gland (the other is called Thyroxine, or (T4)). The thyroid is a small, butterfly-shaped gland located just below the Adam's apple. This gland plays a vital role in controlling the rate at which your body uses energy.
T4 makes up nearly 90% of thyroid hormones, while T3 makes up less than 10%. T4 is converted into T3 in the liver or other tissues. T3, like T4, is also highly protein-bound, but it is the free forms of T3 and T4 that are biologically active. Free T3 is also 4 to 5 times more active than free T4 in circulation.
What does the test include? The HealthCheckUSA Tri-iodothyronine (T3) Free Thyroid test is a blood test that includes:
Who should be tested? Because the free levels of T4/T3 represent immediately available hormone, free T4 and free T3 is thought to better reflect the patient's hormonal status than total T4 and Total T3. We recommend a thyroid test for anyone who:
Valued at: $167.00
Our Price: $60.00
We accept Credit, Debit, HSA or FSA cards.
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|Visit the Test Center You Choose|
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|Analysis at a Nationally Accredited Laboratory|
Your blood sample will be sent to an accredited laboratory for analysis.
|View Your Results Online|
Log on to healthcheckusa.com to view your lab results. Your results will usually be ready within 24-72 hours.
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