About This Test
Triiodothyronine (T3) is secreted by the thyroid gland in 2 forms - free & bound. This test measures free form only. T4 gets converted to T3 as required by the body. The Free T3 (Triiodothyronine) test measures the level of unbound, active T3 hormone circulating in the blood.
Free T3 reflects the biologically active thyroid hormone responsible for regulating metabolism, heart rate, body temperature, Energy production. FT3 is especially useful for evaluating hyperthyroidism.
T3 test is performed to evaluate your thyroid gland function; to help diagnose thyroid disease; to monitor effectiveness of thyroid treatment. Patients with overactive thyroid gland may show high T3 levels but T4 levels maybe normal.
Test Parameters (1)
- FREE T3, Serum
Home Collection
✓ Available
Reports Available In
1 Day
Preparation / Prerequisite
No Special requirement
Frequently Asked Questions
These tests measure things like blood sugar, liver function, kidney function, cholesterol, electrolytes, thyroid.
Fasting is not required.
Mon-Sat, sample before 4pm, report same day and sunday reports, next day.
Yes. We use fully automated machines that ensure accurate and consistent results.
Yes, Free T3 testing is very useful for detecting early thyroid problems (both overactive and underactive thyroid).
TAT Policy
The Turnaround Time (TAT) depends on the following factors:
- Registration date and time
- Type of scan or test
- Scan time or sample collection time
In uncommon circumstances, TAT may be delayed due to test complexity or reasons beyond our control. You will be informed of the estimated TAT at the time of registration.
