# Free T4

This test is to measure free or total T₄ to assess the thyroid hormone function. It is primarily ordered to help diagnose hyperthyroidism and help monitor a person with a known thyroid disorder. Free thyroxine (free T₄) test helps to evaluate thyroid function and diagnose thyroid diseases, including hypothyroidism and hyperthyroidism after TSH levels are found abnormal and helps monitor a person with a known thyroid disorder.
Test Code: 585
₹ 150.00

Free T₄:

Free T₄ test measures the THYROXINE (T) hormone which is produced by the thyroid gland. This thyroxine test helps to screen thyroid disorders and congenital hypothyroidism in newborns.


This test is usually done to assess thyroid function. It is ordered to primarily diagnose hyperthyroidism and during treatment for prognosis. Other associated tests include radioimmunoassay, ELISA kit methods, etc.

General instructions:

Sample Requirement: Specimen - Blood sample taken from the vein.

Test Preparation:  none.

NOTE - Sample for specimen collections may vary based on the patient’s condition/cases according to the patient’s presenting complaints/signs or symptoms:

SPECIMEN REQUIREMENT (Special or Rare Cases) - As instructed and guided by Physician / Clinician / Pathologist / as per Laboratory’s requirements, according to procedures and protocols.   

This Multi-Specialty Clinical Referral Laboratory “RTDIAGNOSTICSprovides precise and accurate tests with an extensive range of testing services to the medical centers to help in the diagnosis and identification of pathology in the test specimens for infectious diseases and also to evaluate the function of organ systems of the patient. It prevents further complications and helps to stabilize and restore health to near normalcy at the earliest without delay.