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Free T3
Parameters : 1
Also known as : Free T3
EXCLUSIVE PRICE
250
Report Delivery
1 Day
Free Sample Collection
Bookings above 500
Pre - Instruction
Fasting - 8 Hours
Covid Safety
Assured
Test Details
Test Code BOBT00071
Test Category Individual Test
Sample Type Blood
Details of Free T3
What is a triiodothyronine (T3) test?
This test measures the level of triiodothyronine (T3) in your blood. T3 is one of two major hormones made by your thyroid, a small, butterfly-shaped gland located near the throat. The other hormone is called thyroxine (T4.) T3 and T4 work together to regulate how your body uses energy. These hormones also play an important role in controlling your weight, body temperature, muscle strength, and nervous system.

The T3 hormone comes in two forms:
  • Bound T3, which attaches to protein
  • Free T3, which does not attach to anything
A test that measures both bound and free T3 is called a total T3 test. Another test called free T3 just measures free T3. Either test may be used to check T3 levels. If T3 levels are not normal, it can be a sign of thyroid disease.

Other names: thyroid function test; total triiodothyronine, free triiodothyronine, FT3
What is it used for?
A T3 test is most often used to diagnose hyperthyroidism, a condition in which the body makes too much thyroid hormone.
T3 tests are frequently ordered with T4 and TSH (thyroid-stimulating hormone) tests. A T3 test may also be used to monitor treatment for thyroid disease.
Why do I need a T3 test?
You may need a T3 test if you have symptoms of hyperthyroidism. These include:
  • Anxiety
  • Weight loss
  • Tremors in the hands
  • Increased heart rate
  • Bulging of the eyes
  • Trouble sleeping
  • Fatigue
  • Low tolerance for heat
  • More frequent bowel movements
What happens during a T3 test?
A health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.
Will I need to do anything to prepare for the test?
You don't need any special preparations for a T3 blood test. Your health care provider will let you know if you need to stop taking any medicines before your test. Certain medicines can raise or lower T3 levels.
Are there any risks to the test?
There is very little risk to having a blood test. You may have slight pain or bruise at the spot where the needle was put in, but most symptoms go away quickly.
Routine Tests
Free T3
Parameters : 1
Also known as : Free T3
EXCLUSIVE PRICE
250
Report Delivery
1 Day
Free Sample Collection
Bookings above 500
Pre - Instruction
Fasting - 8 Hours
Covid Safety
Assured
Test Details
Test Code BOBT00071
Test Category Individual Test
Sample Type Blood
Details of Free T3
What is a triiodothyronine (T3) test?
This test measures the level of triiodothyronine (T3) in your blood. T3 is one of two major hormones made by your thyroid, a small, butterfly-shaped gland located near the throat. The other hormone is called thyroxine (T4.) T3 and T4 work together to regulate how your body uses energy. These hormones also play an important role in controlling your weight, body temperature, muscle strength, and nervous system.

The T3 hormone comes in two forms:
  • Bound T3, which attaches to protein
  • Free T3, which does not attach to anything
A test that measures both bound and free T3 is called a total T3 test. Another test called free T3 just measures free T3. Either test may be used to check T3 levels. If T3 levels are not normal, it can be a sign of thyroid disease.

Other names: thyroid function test; total triiodothyronine, free triiodothyronine, FT3
What is it used for?
A T3 test is most often used to diagnose hyperthyroidism, a condition in which the body makes too much thyroid hormone.
T3 tests are frequently ordered with T4 and TSH (thyroid-stimulating hormone) tests. A T3 test may also be used to monitor treatment for thyroid disease.
Why do I need a T3 test?
You may need a T3 test if you have symptoms of hyperthyroidism. These include:
  • Anxiety
  • Weight loss
  • Tremors in the hands
  • Increased heart rate
  • Bulging of the eyes
  • Trouble sleeping
  • Fatigue
  • Low tolerance for heat
  • More frequent bowel movements
What happens during a T3 test?
A health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.
Will I need to do anything to prepare for the test?
You don't need any special preparations for a T3 blood test. Your health care provider will let you know if you need to stop taking any medicines before your test. Certain medicines can raise or lower T3 levels.
Are there any risks to the test?
There is very little risk to having a blood test. You may have slight pain or bruise at the spot where the needle was put in, but most symptoms go away quickly.
 

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