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Free T3 Test

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Free T3 Test Overview

T3 (triiodothyronine) circulates in body in a bound form with thyroxine-binding globulin and albumin. Less than 0.3% of the total T3 is free fraction (FT3) and is the active form. Commonly the results are used to support results of TSH and FT4. However,  in a small subset of patients only FT3 is elevated.
Thyroid hormones are essential for growth and metabolism. Following are the symptoms of hyperthyroidism: weight loss, rapid heartbeat, tremors, sweating, anxiety, increased sensitivity to heat, etc. 
Whereas patients with hypothyroidism suffer from weight gain, fatigue, slow heart rate, increased sensitivity to cold, depression, dry and thin hair etc.

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Summary Price Of Free T3 Test

We are a trusted lab, offering Free T3 Test with a transparent pricing structure.

The cost of Free T3 Test in India varies as per the city in India.

The average price of Free T3 Test ranges from ₹150 to ₹500.

The price for the test in the following cities is:

  • Chennai: ₹300
  • Delhi: ₹275
  • Mumbai: ₹320
  • Pune: ₹275

Contact Metropolis to book an appointment online.

Frequently Asked Questions

Free T3 test is done to support the results of FT4 & TSH. In a very small group of patients only T3 & FT3 is increased.
In pregnancy & other conditions an increase in thyroglobulin or albumin causes increase of T3 & T4 levels, without actually impacting body functions hence testing FT3 and FT4 is more representative

Free T3 test measures levels of FT3 hormone in blood

Free T3 test requires a blood sample. A tourniquet (elastic) band is placed tightly on the upper arm. The patient is then asked to make a fist. This helps in the build-up of blood filling the veins. The skin is disinfected before needle insertion and the blood sample is collected in vacutainer.

High TSH & high T3/FT3 and T4/FT4: Thyroxine replacement therapy; pituitary adenoma; drugs like heparin, amiodarone, beta blockers, steroids; neonates; resistance to thyroid hormones
High TSH & low T3/FT3 and  T4/FT4: Autoimmune thyroiditis, thyroidectomy, post-radiation, iodine deficiency, thyroid infiltrating tumour/ amyloid
Low TSH & Low T3/FT3 and T4/FT4: Central hypothyroidism, non-thyroidal illness
Low TSH & High T3/FT3 and FT4: Grave's disease, toxic multinodular goitre, toxic adenoma, thyroiditis, drugs, hyperemesis gravidarum & hydatiform mole, congenital hyperthyroidism

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