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What is the Free T4 test?
The thyroid, a gland located at the base of the neck, produces the hormones triiodothyronine and thyroxine (T3 and T4, respectively). Thyroid hormones circulate in two forms in blood: free and bound. 1 The Free Thyroxine (FT4) test measures the unbound form of thyroxine. Thyroid hormones help regulate the way your body uses energy. They influence essential body functions, such as metabolism, body temperature, weight, heart rate, muscle strength, mood, and, in children, growth. Testing free T4 is considered a more accurate indicator of thyroid function than the total T4 test, which measures both free and bound T4. The FT4 test is commonly used alongside other tests to diagnose and monitor thyroid-related conditions. If you are someone who lives seeking to assess your thyroid function, scheduling an FT4 test at home can be convenient for health evaluation.
What the 1 parameters cover
Typical reference ranges — your report marks anything outside them:
Why take the Free T4 test?
An FT4 test may be included as part of a thyroid panel for a comprehensive thyroid function evaluation. Here are some reasons the test can be helpful: To diagnose thyroid-related conditions such as hyperthyroidism (overactive thyroid) or hypothyroidism (underactive thyroid). To monitor the effectiveness of ongoing treatment for a thyroid disorder. To provide more information about thyroid function if a TSH test shows abnormal results. To investigate symptoms of hyperthyroidism, which may include anxiety, weight loss, rapid heart rate, and increased sensitivity to heat. To explore symptoms of hypothyroidism, such as weight gain, fatigue, cold sensitivity, and dry skin. To assess thyroid function in cases of pituitary gland disorders, which may affect T4 levels
Understanding your report
What your results can mean — always review them with your doctor:
The interpretation of Free T4 (FT4) test results is essential for assessing thyroid function and diagnosing thyroid-related conditions. Here is how the test results can be interpreted: Understanding your FT4 test results is key to identifying and managing thyroid disorders. A result outside the normal range could signal thyroid dysfunction, prompting further evaluation and treatment.
Free T4 test at home in Ahmedabad
FAQs on the Free T4 test
What is the Free T4 test price?
The MRP of the Free T4 test is ₹300. Sun Pathology currently offers it at a discounted price of ₹150, as per the current rate list.
Is home sample collection available for FT4 Tests?
Yes — Sun Pathology provides free home sample collection across Ahmedabad, with hourly slots between 6 AM and 8 PM. You can book it on this page or by calling 079-67006700.
What is an FT4 Test used for?
To measure the levels of free thyroxine (T4) hormone.
Is fasting required for an FT4 Test?
No fasting is needed for the Free T4 test. You can eat and drink normally, unless your doctor has advised otherwise.
What is the procedure to book an FT4 Test with Sun Pathology?
You can book the Free T4 test on this page, on WhatsApp, or by calling 079-67006700. Choose free home collection (6 AM–8 PM) or walk in to any Sun Pathology centre, open 8 AM–8 PM every day including Sunday.
What are the normal levels for FT4 Tests?
Your report shows your value next to the laboratory's reference range for each parameter. Reference ranges vary with the testing method, age and sex, so please have your doctor interpret the result in the context of your health.
How much time do FT4 Test reports take?
Reports for the Free T4 test are usually ready within 6 hours of sample collection, and are delivered on WhatsApp and email.
How often do I have to do the FT4 Test?
That depends on why the test was advised. Many people include it in a routine annual health check-up; your doctor will suggest the right frequency for your situation.