Save Tax with full body checkups starting at ₹ 1099
Orange Health
Search for
 Tests
 CheckupsSupport
    Homefree t4 test
    T4 - Free₹790₹50037% off
    trust markerMins HomeCollection
    trust markerHappyCustomers
    trust markerGoogleRating
    trust markerCertifiedLabs

    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 Gurgaon₹ 400
    3T4 - Free Test in Delhi₹ 400
    4T4 - Free Test in Hyderabad₹ 690
    5T4 - Free Test in Mumbai₹ 410
    6T4 - Free Test in Noida₹ 400
    7T4 - Free Test in Pune₹ 410

    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

    • I got the tests done with reasonable price. A person stepped in by 6 30 AM to collect the blood sample.Really I thank Dr Lahari for referring Orange Health Labs.
      Naga Sudheer Madduru9 Dec 2023 • Bangalore
      5.0
    • Good experience. The team always came on time to collect samples. They were well dressed and clean. Report always came by the committed time.
      Aashish Sheth30 Nov 2023 • Bangalore
      5.0
    • Booked home collection. Person was on time to collect the sample, was well groomed and very polite while being thorough professional. Final report was received within few hours on WhatsAppand email. Periodic Updates received from lab was very helpful. Overall a very good experience
      Giridhar Kudinoor11 Feb 2024 • Bangalore
      5.0
    • Punctual. Technician is polite, courteous and efficient. Needle pricking is painless and results of the tests are given very fast. I am fully impressed. Me and 4 more family members have been availing Orange services for the past two years. Excellent service.
      Chivukula Baskar17 Feb 2024 • Bangalore
      5.0
    • My interaction with Orange Health Labs has been excellent. Very quick procedure. The samples were collected at the appointed time (6 AM) by a very professional agent who dressed neatly and took all the necessary safety procedures. The results were sent by midday as promised. I want to thank the staff for their fantastic job.
      Raja Srinivasa Reddy Narahari16 Feb 2024 • Bangalore
      5.0
    • My experience with Orange Health Labs has been great and very user friendly application they have and very easily we can book appointments. We booked an appointment with Mohammad Adam from Orange Labs and he was the one that arranged everything that we needed.
      Jyothi Kamath31 Oct 2023 • Bangalore
      5.0
    • Free Home Collection, Reasonable Rates, Digital Report within 4-6 hours. Everything perfect. Full body check rates are considerably on par with other players like Anand Diagnostics, Thyrocare, 1Mg etc.
      Anoop Kumar Pandey1 Feb 2024 • Bangalore
      5.0
    • I like the Service from Orange Health Labs it's all because of the proffessional staff whom i experienced. Who collected my blood in a very proffessional way and with all care. Staff name Mr. Abdul Shafeeq... Really polite and Proffessional all went smooth with their service I would like to recommend this to everyone who's looking for blood report within sitting at home...
      Shamshu Tabreez15 Oct 2023 • 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
    • Good experience everytime except one where phlebotomist didn't prick correctly. My wife had much pain even after few days and it looked like some clot had happened. But it was one in almost 20 visits. I would still recommend. One suggestion to Orange would be to keep Lithium tests within a day so we could get test results faster
      ankit kaul9 Dec 2023 • 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
    Popular tests
    Amh Test PriceBUN Test PriceCBC Test PriceChlamydia Test PriceCholesterol Test PriceCreatinine Test PriceCRP Test PriceCRP Test PriceD Dimer Test PriceDengue Test PriceESR Test PriceFBS Test PriceHBA1c Test PriceHIV Test PriceKFT Test PriceLFT Test PriceLipid profile Test PricePPBS Test PriceProlactin Test PriceRAST Test PriceRBS Test PriceRT PCR Test PriceSGPT Test PriceThyroid Test PriceUric Acid Test PriceUrine culture Test PriceVDRL Test PriceVitamin B12 Test PriceVitamin D Test PriceWidal Test Price
    Orange Health
    Download iOS AppDownload Android App
    CompanyAbout UsLocate UsCareersEmedic CareerBlogsContact Us
    PartnersFor DoctorsFor CorporatesRent Your Property
    PolicyNABL DataResponsible DisclosureBiomedical Waste Disclosure
    Lab tests across IndiaLab test in BengaluruLab test in GurugramLab test in DelhiLab test in NoidaLab test in HyderabadLab test in Mumbai
    Health checkups across IndiaFull Body Checkup in BangaloreFull Body Checkup in GurugramFull Body Checkup in DelhiFull Body Checkup in NoidaFull Body Checkup in HyderabadFull Body Checkup in Mumbai
    © 2025 Orchard Healthcare Pvt. Ltd. All rights reserved
    TERMS | Privacy Policy