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    Homefree t4 test
    T4 - Free₹790₹50037% off
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    What Is a Free T4 (FT4) Test?

    The Free T4 (FT4) test measures the level of unbound thyroxine (T4) hormone in the blood. T4 is produced by the thyroid gland and plays a vital role in regulating metabolism and growth.

    This test specifically evaluates the free (biologically active) form of thyroxine, which is not bound to proteins and can directly affect body cells. It helps in diagnosing thyroid disorders such as hypothyroidism and hyperthyroidism, and in monitoring treatment effectiveness in patients with known thyroid conditions.

    Orange Health Labs provides convenient at-home sample collection for Free T4 tests across multiple cities, with rapid report delivery.

    Free T4 (FT4) Test Price

    The cost of the Free T4 test is generally around ₹350, though it may vary depending on the city where the order is placed. Prices include home collection.

    Free T4 Test Cost Across India

    S.NoTest In CityPrice
    1T4 - Free Test in Bangalore₹ 500
    2T4 - Free Test in Hyderabad₹ 690

    Free T4 (FT4) Test Preparation

    No special preparation is needed for the Free T4 test. Fasting is not required.

    Who Should Get This Test?

    • Individuals with symptoms of thyroid dysfunction

    • Patients with abnormal TSH results

    • Those on thyroid hormone therapy

    • Pregnant women with thyroid conditions

    During the Test:

    A healthcare professional will draw a blood sample from a vein in your arm The collection process typically takes less than 5 minutes

    After the Test:

    • Mild bruising or discomfort may occur

    • Samples are sent to the lab, and results are usually available within 6 hours

    Why Take a Free T4 (FT4) Test?

    Your doctor may recommend a Free T4 (FT4) test if you show signs of an underactive or overactive thyroid or have abnormal TSH levels.

    Signs of Hyperthyroidism (Overactive Thyroid):

    • Rapid heartbeat

    • Anxiety and insomnia

    • Weight loss

    • Tremors or shakiness

    • Heat sensitivity and excessive sweating

    • Visual disturbances or bulging eyes

    • Menstrual irregularities

    Signs of Hypothyroidism (Underactive Thyroid):

    • Weight gain

    • Fatigue

    • Cold intolerance

    • Constipation and dry skin

    • Hair thinning or loss

    • Puffy skin

    • Irregular periods

    The FT4 test is also used in pregnancy and to monitor ongoing thyroid treatment.

    Free T4 (FT4) Test Results & Interpretation

    Free T4 test results help determine thyroid function and guide diagnosis when interpreted with other tests such as TSH.

    Normal Reference Range:

    Free T4 : 0.78–2.19 ng/dL

    Interpretation Guide:

    • High FT4: May indicate hyperthyroidism (overactive thyroid), often due to Graves' disease or thyroiditis

    • Low FT4: May indicate hypothyroidism (underactive thyroid), often linked to Hashimoto's thyroiditis or pituitary dysfunction

    FT4 levels should always be interpreted in conjunction with TSH and clinical symptoms.

    Additional testing may include:

    • Thyroid Function Test

    • TSH (Thyroid Stimulating Hormone)

    • TPO (Thyroid Peroxidase Antibody)

    Free T4 Test Overview

    Test NameT4 - Free Test
    PriceThe T4 - Free Test price is ₹ 500.
    Also Known AsFree Thyroxine test, Free T4 concentration, Free T4 index (FTI)
    PurposeTo measure the levels of free thyroxine (T4) hormone.
    Pre-test InformationFasting is not required for a T4 - Free Test
    Report DeliveryGet reports within 3 hours.
    FrequencyAs prescribed by your doctor.
    Home TestingYes, home blood sample collection in 60 minutes from booking.
    Sample RequiredA blood sample is required for a T4 - Free Test
    4.9
    Google Rating

    Highest Rated Diagnostic Lab

    • During my wife’s treatment we needed to get blood tests done before each round of treatment and results were needed quickly. Orange always delivered and were great partners in our healthcare journey
      Srinivas B Vijayaraghavan13 Feb 2024 • Bangalore
      5.0
    • Really excellent service. On time sample was collected and I got the report within 5 hours.
      Ashit M26 Jan 2024 • Bangalore
      5.0
    • It was excellent. The person who came to collect Mr. Surya was very good. And very professional.
      Girija Karthik7 Dec 2023 • Bangalore
      5.0
    • Very Professional behaviour while taking blood samples . The result was on time without any delay . I would recommend and I will also use in future.
      biswanath satpathy22 Jan 2024 • Bangalore
      5.0
    • Very very professional service.Very punctual,Super Duper well behaved Facility.Most important thing, A layman can understand the report So in details.Quickest delivery and affordable price
      Swayam Jena9 Feb 2024 • Bangalore
      5.0
    • Best experience ever with Orange labs. Timely report collection and on time they give the results. Technicians are patient friendy and remove the fear from the patients. No pain while pricking the needle. Each and every time they sanitize the items and follow each and every protocol to its great extent. Happy with Orange. Will always recommend everyone to try orange. Less costly and more effective. Thank you so much.
      Krishnamoorthy Narayanan26 Jan 2024 • Bangalore
      5.0
    • I got a reference from my office mates, Mr.Harish the sample collector was very helpful, Main thing is He’s on time and very friendly, I’ll surely refer more people bcz of Mr.Harish
      Naveen Kumar5 Feb 2024 • Bangalore
      5.0
    • Orange Health team collected the sample on scheduled time, and received updates at every stage and very cost effective compare to other labs/Hospital. Highly recommend this lab to everyone
      Thiru Karikalan9 Feb 2024 • Bangalore
      5.0
    • Very good service.I have availed their services multiple times and have recommended to my family members as well. Punctuality, reasonable pricing, early delivery of reports and reliable data (compared the data with other centres) are the features that I like the most. No complaints.
      Oindrila Bhattacharjee29 Dec 2023 • Bangalore
      5.0
    • Taken their services couple of times. Highly appreciate their time- sense. The person who came to collect came perfect on time, professionally collected samples without any hazzle, the status tracking was seamless and result availability time was published ahead in the web . Amazing !
      Raghavendran Srinivasan3 Jan 2024 • Bangalore
      5.0

    Payment & Refund Policy

    • We do not accept cash payments
    • All modes of online payment are accepted
    • Refunds will be credited back to the source of payment within 5-7 working days of order cancellation.

    References

    1. T4 (thyroxine) Test. Cleveland Clinic. 2022  Available from:  https://my.clevelandclinic.org/health/diagnostics/24235-thyroxine-t4-test
    2. Thyroxine (T4) Test [Internet]. Medlineplus.gov. 2022  Available from:  https://medlineplus.gov/lab-tests/thyroxine-t4-test/
    3. Free T4 - Health Encyclopedia - University of Rochester Medical Center [Internet].  Available from:  https://www.urmc.rochester.edu/encyclopedia/content.aspx?contenttypeid=167&contentid=free_t4_thyroxine
    4. Endocrine Society. Thyroid and Parathyroid Hormones [Internet].  Available from:  https://www.endocrine.org/patient-engagement/endocrine-library/hormones-and-endocrine-function/thyroid-and-parathyroid-hormones
    5. Free T4 test Information | Mount Sinai - New York [Internet].  Available from:  https://www.mountsinai.org/health-library/tests/free-t4-test
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