This test is aslo known as Total T4 Test, Total Thyroxine Test, T4 Test, T4, T4 Total Test, Bound T4 Test.
T4 Total is also known as thyroxine, which is the main form of thyroid hormone made by the thyroid gland. Majority of T4 is bound to proteins, while a small proportion is unbound or free. Free T4 testing measures T4 that circulates through the blood and is available to enter body tissues and act upon them. T4 Total testing measures the total amount of the hormone, including free T4 and bound T4.
The T4 Total test measures the total levels of thyroxine (T4), a thyroid hormone, in the blood. It assesses the combined levels of both free (unbound) and bound forms of T4.
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Your doctor may order a T4 Total test in several conditions for him or her to assess the levels of T4 and how well your thyroid is working:
- Thyroid Function Evaluation: If a patient exhibits symptoms of thyroid dysfunction, such as fatigue, weight changes, or changes in mood, a T4 Total test may be ordered as part of a comprehensive thyroid function evaluation.
- Monitoring Thyroid Hormone Therapy: For individuals undergoing thyroid hormone replacement therapy, a T4 Total test helps assess the overall effectiveness of the treatment and ensures that T4 levels are within the target range.
- Investigation of Thyroid Disorders: A T4 Total test is valuable in diagnosing specific thyroid disorders, such as hyperthyroidism (a condition involving an overactive thyroid gland) or hypothyroidism (a condition in which the thyroid gland is underactive), and provides insights into the functioning of the thyroid gland.
Hyperthyroidism Symptoms include:
- Weight loss
- Anxiety
- Insomnia
- Irritability
- Difficulty tolerating heat
- Mood swings
- Rapid or irregular heartbeat
- Loose, frequent bowel movements
Hypothyroidism Symptoms include:
- Fatigue
- Weight gain
- Feeling cold
- Painful joints and muscles
- Dry skin
- Thin and/or dry hair
- Slow heart rate
- Constipation
- Depression
- Irregular menstrual periods
- Fertility problems
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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