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    Thyroid Function Test (TFT)56845021% off
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    What is a Thyroid Function Test (TFT)?

    A Thyroid Function test (TFT) is a simple blood test that measures the concentrations of various types of thyroid hormones in the blood sample. The test aims to evaluate the performance of the thyroid gland in the body, which is a crucial regulator of various bodily functions. The test analyses the levels of crucial thyroid hormones like triiodothyronine (T3), tetraiodothyronine (T4), and thyroid-stimulating hormone (TSH). It is useful in diagnosing thyroid-related disorders such as hyperthyroidism and hypothyroidism. Thyroid function is also evaluated in other metabolic conditions. The TFT panel is typically useful for individuals showing symptoms of thyroid dysfunction, such as irritability, unexplained weight changes, fatigue, restlessness, or lethargy. Given the stress prevalent in bustling urban environments like Hyderabad, individuals may develop thyroid disorders due to stress. Therefore, regular thyroid screening via TFT test in Hyderabad is essential for early detection and effective management of thyroid-related disorders.

    Thyroid Function Test (TFT) Parameters

    A TFTs assess the levels of chief thyroid hormones in the blood serving as a crucial diagnostic tool for thyroid disorders. The TFT panel focuses on three key parameters:

    Thyroid-stimulating hormone (TSH): TSH levels are essential for checking thyroid function and are usually the first test recommended by doctors. TSH is secreted from the pituitary gland in the brain and directs the thyroid gland to make thyroid hormones T3 and T4. Changes in TSH levels can indicate thyroid problems before thyroid hormone levels start to fluctuate.

    Thyroxine (T4): T4 is the main thyroid hormone in the body and is measured in a total T4 test, which looks at both bound and free hormone levels. Bound T4 is attached to the proteins and stays in the blood until the body needs it, while free T4 can enter body tissues.

    Triiodothyronine (T3): T3 is another important thyroid hormone in the body. T4 is converted to T3 in the liver. When there's suspicion of hyperthyroidism but T4 levels seem normal, a T3 test can help confirm the diagnosis. When T3 levels are high even when T4 levels are normal, hyperthyroidism can be accurately diagnosed.

    For any concerns regarding thyroid hormones and conditions related to it, it is essential to schedule a TFT test at home after consulting your doctor.

    Thyroid Function Test (TFT) Preparation

    To prepare for a TFTs, consider the following aspects:

    Prerequisites: Getting TFTs does not require any special preparation. You don't need to fast before the TFTs.

    Best Time for Testing: It's best to provide a morning blood sample for the Thyroid test. Try to schedule the test at the same time each day every time you do this test.

    Who Should Get Tested: Thyroid issues can affect anyone, regardless of age. Consider getting a Thyroid test if you have symptoms of thyroid problems, are pregnant, are experiencing fertility issues, have a family history of thyroid disease, or are taking thyroid medication. The test helps assess thyroid function and monitor medication dosages.

    Cautions Before the Test: It is essential to note that certain factors, such as medications and supplements, can affect TFT test results. Also, the timing of your last dose of thyroid medication, especially those containing T3, can influence TFT test results. Lifestyle factors like stress, diet, and sleep patterns can also impact thyroid function and test outcomes. Discuss these factors with your doctor before the TFTs to ensure an accurate interpretation of your hormone levels.

    Why Take a Thyroid Function Test (TFT)?

    • To Monitor Existing Thyroid Conditions

    Regular testing via TFTs allows for the ongoing assessment of treatment effectiveness and enables adjustments to medication dosages as necessary. Tracking thyroid condition progression helps ensure effective management and facilitates adjustments to treatment strategies based on hormone level changes.

    • Diagnose Thyroid Disorders Early

    TFTs help diagnose thyroid disorders. Even in the absence of noticeable symptoms, a Thyroid test can reveal underlying issues before they escalate into severe health concerns. Persistent symptoms such as fatigue, weight changes, or mood swings could indicate thyroid dysfunction, making testing crucial for accurate diagnosis.

    • During Pregnancy or Family Planning

    Optimal thyroid health is vital for both maternal and foetal well-being during pregnancy, making Thyroid tests essential for ensuring that maternal hormone levels support a healthy pregnancy. Testing before conception helps address any thyroid issues that could affect fertility or pregnancy outcomes.

    • For Individuals With a Family History of Thyroid Disease

    Individuals with a family history of thyroid disorders are at increased risk of developing thyroid disorders. Therefore, early testing becomes crucial for timely identification and management.

    • If Experiencing Specific Symptoms

    The test is crucial for individuals who have symptoms of thyroid dysfunction. Symptoms like sweating, weight loss, rapid heartbeat, or nervousness may indicate hyperthyroidism, warranting testing for accurate diagnosis. Conversely, symptoms such as weight gain, fatigue, sensitivity to cold, or muscle aches may signal hypothyroidism, necessitating testing for confirmation.

    • To Combat the Impact of Stress on Thyroid Function

    Stress can affect thyroid function, particularly in bustling urban environments. Regular Thyroid testing in cities like Hyderabad helps maintain optimal thyroid health amid busy lifestyles.

    • For Medication Management

    Routine assessment with TFTs ensures that hormone replacement therapy remains effective and hormone levels stay within the desired range, facilitating appropriate treatment adjustments.

    Prioritising thyroid health through regular TFTs empowers individuals to proactively manage their well-being and address any thyroid-related concerns promptly.

    Thyroid Function Test (TFT) Results & Interpretation

    Range for TSH Test Results

    Here are the typical ranges for healthy individuals who are not pregnant:

    • 0.400 to 4.049 µIU/mL

    For pregnant individuals, the TSH range is as follows:

    TrimesterTSH (µIU/mL)
    First0.100 to 2.50
    Second0.200 to 3.00
    Third0.300 to 3.00

    Understanding TSH Result Factors

    High Levels : A high TSH level suggests that the thyroid gland is not producing enough thyroid hormone, known as primary hypothyroidism.

    Low Levels : A low TSH level typically indicates an overproduction of thyroid hormone, known as hyperthyroidism.

    Factors Influencing TSH Results

    • Time of Meal and Circadian Rhythm: Few studies have shown that TSH levels can fluctuate depending on food intake and the time of day, with notable variations observed throughout the day and in response to eating.

    • Other Factors: It is important to recognize that TSH is a labile hormone and is subject to non-thyroidal pituitary influences (glucocorticoids, somatostatin, dopamine, etc.), stress, activity, that can disrupt the TSH/free T4 relationship, genetics, poisonous substances and radiation exposure, inflammation of the thyroid gland, deficiency or excess of iodine in the diet, pregnancy, certain medications – antidepressants, cholesterol lowering drugs, chemotherapy drugs, steroids, thyroid cancer.

    Range for T4 and T3 Test Results

    The normal T4 and T3 levels in non-pregnant individuals are given below:

    • Total T4: 5.53-11.0 μg/dL

    • Free T4: 0.78-2.1 ng/dL

    • Total T3: 0.97-1.69 ng/dL

    • Free T3: 2.77-5.27 pg/mL

    For pregnant individuals, the T4 and T3 range is as follows:

    TrimesterT4 (μg/dL)T3 (ng/mL)
    First7.57 - 8.131.21 to 1.32
    Second7.17 - 8.641.13 to 1.64
    Third7.07 - 8.441.16 to 1.51

    Low Levels : Low levels of T4 and T3 hormones suggest hypothyroidism. This can be caused by Hashimoto's disease, iodine deficiency, inflammation of the thyroid gland, or congenital factors.

    High Levels : Elevated levels of T4 and T3 indicate hyperthyroidism. This could be due to factors such as excess iodine in the diet, thyroid gland inflammation, Graves’ disease, or thyroid nodules.

    If any of your test parameters show abnormalities, it's recommended to consult with your doctor for better guidance and understanding of your condition.

    FAQs on Thyroid Function Test (TFT)

    At Orange Health Labs, the TFTs cost ₹ 450. We also offer rapid home sample collection within 60 minutes of booking the test.

    Yes, free sample collection is available at your desired location for getting a Thyroid test at home in Hyderabad.

    A Thyroid test is primarily used to diagnose disorders of the thyroid gland such as hyperthyroidism, hypothyroidism, and other metabolic disorders.

    No, the Thyroid test does not require any fasting.

    To schedule a Thyroid test with Orange Health Labs in Hyderabad, follow these steps:

    Search for the Thyroid test in Hyderabad or home sample collection and click on Orange Health’s listing.

    Select the test, review the details and test requirements, provide your address, and confirm the booking after choosing a suitable time slot and payment.

    Our trained professional eMedic will collect the sample at your home within the chosen time slot.

    The sample will be analysed at our NABH/NABL-accredited and ICMR-approved laboratories.

    You are likely to receive your reports via email, WhatsApp or through our app within 6 hours of sample collection.

    Various parameters of the TFTs are observed in the given reference ranges:

    TSH: 0.400 to 4.049 µIU/mL

    Total T4: 5.53 to 11.0 μg/dL

    Free T4: 0.78 to 2.1 ng/dL

    Total T3: 0.97 to 1.69 ng/dL

    Free T3: 2.77 to 5.27 pg/mL

    Post booking, the sample collection process can be completed in a few minutes subject to the availability of the slot. Once your blood sample is collected, the delivery of reports may take around 6 hours.

    The frequency of needing TFTs varies for each individual, determined by your doctor.

    Three main parameters, T3, T4, and TSH, are evaluated with Thyroid tests.

    The Thyroid blood test does not require fasting.

    The TFT panel includes tests like TSH, T4, and T3 for a comprehensive evaluation of thyroid health.

    Normal TSH levels are observed between 0.400 to 4.049 µIU/mL. However, they may vary based on age and other factors, such as a pregnancy.

    A Thyroid Profile test typically includes a comprehensive assessment of three thyroid hormones, namely, TSH T3, and T4. On the other hand, the TSH test measures only one parameter, thyroid-stimulating hormone. It is a hormone that allows the body to synthesise the key thyroid hormones.

    Yes, it's important to note that TSH levels can fluctuate independently of thyroid dysfunction, sometimes due to non-thyroidal illnesses. Additionally, TSH levels may be abnormally higher in individuals over 80 years of age without having any thyroid-related disorders.

    A thyroid panel involving the measurement of TSH, T4, and T3 levels is essential for evaluating thyroid function.

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