Laboratory test
Total triiodothyronine (T3)
Test code · ИМ.002
Total T3 reflects the combined amount of free and protein-bound triiodothyronine in blood.
- Specimen
- Blood serum
- Turnaround time
- 1–2 days
Collection points for the selected city
About the test
Total T3 reflects the combined amount of free and protein-bound triiodothyronine in blood. It helps clarify the pattern of thyroid dysfunction, particularly when thyrotoxicosis is suspected. T3 helps regulate metabolism.
The result is considered together with TSH and T4, symptoms and treatment. Transport protein levels, pregnancy and certain medicines can affect total T3. An isolated change is not a standalone diagnosis.
Why it is ordered
- Clarify thyroid dysfunction.
- Complement TSH and T4 results when thyrotoxicosis is suspected.
How to prepare
Before taking the test, check the preparation and specimen collection requirements with the laboratory. Tell your doctor about medicines and recent treatment. Do not stop prescribed medicines on your own.
Where to have the test
All collection pointsCheck whether the test can be taken at your chosen collection point.
Happy Clinic
Rasul Dent
We will help you prepare for your visit
We will answer questions about services and the testing process.