About the test

Thyroid Panel Test is a simple blood test that uses a blood sample to evaluate the functioning of the thyroid gland. The thyroid gland is a butterfly-shaped organ, located at the base of the neck. It helps regulate the metabolism, energy generation and body temperature.

Thyroid Panel test is carried out by taking a blood sample from the patient’s vein in the arm using a needle. Then this blood sample undergoes various processes in the lab to determine the values of free total thyroxine T-4, free total triiodothyronine T-3 and thyroid stimulating hormone (TSH) in the bloodstream.

Why get tested?

Thyroid Panel Test is used to assess the functioning of the thyroid gland. It helps identify an under-active or overactive thyroid gland. The test checks for three parameters in the blood:


Free Total thyroxine FT-4

Free Total triiodothyronine FT-3

Thyroid stimulating hormone (TSH)


The test does not require any specific preparations. However, mentioned below are a few points that must be kept in mind prior to undergoing the Thyroid Panel Test -

The patients are advised to inform the doctor about their present health status and any on-going medical treatment.

The patients should also inform the doctor about herbal products they have been consuming as it may interfere with the test results.

Patients are also advised to inform the doctor about any allergies they suffer from.

Do not smoke or drink alcohol prior to undergoing the test.

Women should avoid taking the tests 7 days before or after the menstrual period in order to avoid falsification of results. 

The patients may be asked to undergo the test early in the morning or after fasting.

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