This test is aslo known as Total T3 Test, Triiodothyronine Test, T3 Test, Bound T3.
Triiodothyronine, known as T3, is an important thyroid hormone that regulates metabolism and ensures your body can perform essential functions properly. While most T3 in the bloodstream is bound to protein, some is unbound or free.
The total T3 test measures the bound T3 and free T3 combined.
Total T3 may be ordered to assess the thyroid function or if a thyroid disorder is suspected. It is also used to assess the pituitary gland problems, evaluate the severity & the type of thyroid disease, and to monitor treatment for a thyroid condition.
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A Free T3 test may be ordered in several conditions to assess the free T3 levels:
- Thyroid Function Evaluation: If a patient exhibits symptoms of thyroid dysfunction, such as weight changes, fatigue, or irregular heart rate, a Free T3 test may be ordered as part of a comprehensive thyroid function evaluation.
- Monitoring Thyroid Hormone Therapy: For individuals undergoing thyroid hormone replacement therapy, a Free T3 test helps assess the effectiveness of the treatment and ensures that the free T3 levels are within the target range.
- Investigation of Thyroid Disorders: A Free T3 test is valuable in diagnosing specific thyroid disorders, such as hyperthyroidism or hypothyroidism, and provides insights into the functioning of the thyroid gland.
Your doctor may also recommend this test if you have an abnormal TSH (Thyroid-stimulating hormone) or you are experiencing the symptoms of an overactive thyroid, called hyperthyroidism, which may include:
- Weight changes, usually weight loss
- Fatigue
- Frequent bowel movements
- Hair loss
- Increased appetite
- Increased sweating
- Menstrual irregularities
- Heart palpitations
- Insomnia
- Nervousness or anxiety
- Problems with concentration
Sometimes, it is less helpful in diagnosing hypothyroidism because T3 is typically the last hormone to become abnormal if you are hypothyroid.
No special preparations required.
None
Dummy Test
Type the specimeny type like blood, urine or any other specimen required.
Sample report in a format
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