Free T3 Blood Test in Malaysia
Free Triiodothyronine - Triiodothyronine (T3) is one of two major hormones produced by the thyroid gland, a small butterfly-shaped organ that lies flat across the windpipe at the base of the throat. The other major thyroid hormone is called thyroxine (T4) and together they help control the rate at which the body uses energy. Almost all of the T3 (and T4) found in the blood is bound to protein. The rest is free (unbound) and is the biologically active form of the hormone. Tests can measure the amount of free T3 or the total T3 (bound plus unbound) in the blood. Most of the hormone produced by the thyroid is T4. This hormone is relatively inactive, but it is converted into the much more active T3 in the liver and other tissues. T3 levels are regulated by the feedback system that the body uses to maintain stable amounts of thyroid hormones in the blood. T4 and TSH, along with its regulatory hormone thyrotropin releasing hormone (TRH), which comes from the hypothalamus, are also part of the feedback system.
Sample Type
Blood Sample
Turnaround
24–48 Hours
Fasting
No Fasting
Clinics
450+ Locations
Why Take This Test?
For fuller thyroid assessment when hyperthyroidism or T3 issues are suspected.
Why Doctors Recommend It
To assess thyroid function and diagnose hormonal imbalances.
How It Works in 3 Easy Steps
Skip the hospital queues. Book online, walk in, and review reports on your phone.
Book on App
Select this test, choose your nearest clinic, and confirm booking.
Quick 5-Min Sample
Walk into your selected partner GP clinic for blood sample collection.
Results in 24–48h
Digital PDF report sent to WhatsApp & Elab App with doctor teleconsult.
Frequently Asked Questions
What is the purpose of the Free T3 test?
To assess thyroid function and diagnose hormonal imbalances.
Do I need to fast before taking this blood test?
No fasting is typically required for this specific test unless combined with fasting glucose or lipid panels. Plain water is always encouraged.
How do I access my laboratory report?
Once processed by our certified laboratory (within 24–48 hours), your secure digital report will be sent directly to your WhatsApp and permanently saved in your Elab App account. You can also request a free post-report doctor video call.
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