Free Triiodothyronine FT3 Test

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About FT3 Blood Test

Free triiodothyronine FT3 test is performed to determine the amount of FT3 in the blood. Triiodothyronine is a hormone produced by the thyroid gland. This hormone helps the body to regulate the metabolism. It is also used to evaluate the functioning of the thyroid and assess abnormal protein disorder. Triiodothyronine is active form thyroxine. It plays a vital role in development, regulating heart rate, metabolism, and body’s temperature. It is used to identify hyperthyroidism and hypothyroidism. The normal range of free triiodothyronine is 1.8-5.4 mcg/dl.

Thyroid Types


It is a condition when the thyroid gland produces a high amount of the hormone thyroxine. It can increase the metabolism of the body which can lead to weight loss, irregular or rapid heartbeat.

Symptoms Of Hyperthyroidism:

  • Tremor
  • Nervousness
  • Increased appetite
  • Sweating
  • Changes in menstrual patterns
  • Increased sensitivity to heat
  • Rapid heartbeat
  • Irregular heartbeat
  • Unintentional weight loss
  • Fatigue
  • Muscle weakness
  • Skin thinning
  • Brittle hair
  • Difficulty sleeping

Risk Factor For Hyperthyroidism Are:

  • Female sex
  • A family history, with Grave’s disease.
  • A personal history of chronic illness, such as Type 1 diabetes, primary adrenal insufficiency.

Complications Associated With Hyperthyroidism:

  • Heart problems
  • Brittle house
  • Red, swollen skin.
  • Eye problems
  • Thyrotoxic crisis.


It is a condition when the thyroid gland produces less amount of hormone.

Symptoms Of Hypothyroidism:

  • Fatigue
  • Depression
  • Feeling cold
  • Dry skin
  • Decreased sweating
  • Impaired memory
  • Puffy, sensitive face.
  • Elevated blood cholesterol
  • Fertility difficulties
  • Menstrual changes
  • Stiffness and pain in the joint.
  • Constipation
  • Muscle weakness
  • Hoarseness.

Now you can book a Free Triiodothyronine FT3 test by calling us on +917289876363. Online booking is also available. For online booking fill the application form by click on book now button. Our agent will call you to confirm the slot for an appointment. The test result will be updated on the registered email id. Payment can be paid once the sample collection is done.

FT3 Test Description

  • UNITS: pg/ml
  • VOLUME: 1ml
  • NORMAL RANGE: 1.7 – 4.2

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