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Book T3 Free (FT3) Test Online

Conveniently book for a home collection and get your reports online.

60 min Home collection

As per NABL testing standards

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Connected to your doctor

What is T3 Free (FT3) test?

The unbound or free triiodothyronine hormone (FT3) is readily available for uptake into cells. This differs from the bound/total hormone, T4 (FT4) that is not immediately available for uptake into cells. The FT3 test measures only free/unbound triiodothyronine hormone (FT3).

Why get the T3 Free (FT3) test?

Free T3 helps in determining thyroid dysfunction in patients with symptoms of hypothyroidism or hyperthyroidism, but who have normal TSH values. Free T3 measurements can be useful to determine appropriate medication and dosage even in those with high or low TSH.

When to take this test?


Body Part

Thyroid gland

Sample Requirement


Normal Range

2.3 pg/mL to 4.2 pg/mL

Frequency to repeat test

Every 6 months

Precautions to be taken before for the test

No particular precautions are required, unless it is recommended by your doctor.


Doctor and Patient
Test is available in Bangalore through Orange Health Diagnostic Lab.
Order now & get your sample collected in 60 minutes


What our customers say about us


 I normally have an issue with my veins as they are very thin but the technician was experienced and the sample came out in one shot at the first attempt, which really reassured me.

Arshia L.


The pickup was done extremely nicely. Got a message when the person started , no calls for directions and most of all extremely polite representative.

Nishanth I.


Got my one year old tested. Very professional and safe. Using sealed sample kits with needles, tubes and gloves pre-packed.

Pallavi T.