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

    • 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 prompt to contact me..easy to use web site ..Follow up calls & appt ,with reminders.Lab tech very courteous,prompt ,all eqpt was opened , after showing me the sealed pckt ..Smooth & painless sample collection .
      Arjun Sridharan12 Jan 2024 • Bangalore
      5.0
    • This is my 2nd time. They are charging very reasonable price. Sample collection happened in time without any inconveniences and in very hygienic way. Got the final report before promised time. Reports were getting updated as soon as the tests were getting completed and I was getting updates over email and as well as whatsapp and finally the final report came. The reports look accurate. I had a very good experience again.
      Swarup Pattanayak29 Sep 2023 • Bangalore
      5.0
    • Very nice experience. Sample collection was done at door steps at our own convenient time. Report was shared on time too. I would recommend to give it a try. It is also cheaper as compared to other labs.
      AJAY KUMAR30 Aug 2023 • Bangalore
      5.0
    • Our overall experience was great. The person who came for sample collection was very good and punctual. We received the reports in 6 hours which really amazed me. I would highly recommend them due to their great customer service.
      anuj mishra13 Feb 2024 • Bangalore
      5.0
    • Experience with orange health was satisfactory and hassle-free. First I had booked for fasting sugar test and glucose level. But I wanted HBA1c test also to be done. So when the captain came into collect the sample on the spot i booked a new test and cancellEd glucose test. In an hour i got a confirmation call for cancellation of the test and received the refund by evening. Good experience
      Manal Sultana12 Sep 2023 • Bangalore
      5.0
    • Orange health lab giving the satisfaction work for people. Response is good they will collect the samples on time and they release the reports also on time. They are mentioned the well knowledge Emedics I am fully satisfied with orange health Thank you.
      Basu Basu S K2 Oct 2023 • Bangalore
      5.0
    • I have a good experience with orange health labs. The samples gets collected and the reports are always sent on time. I am happy with the services provided and hope they continue the same future.
      Amita Abhilipsa7 Jan 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
    • It was a good experience with orange.we have done number of times.but this is firsttime for our kid.she didn't have any discomfort or pain while collecting the blood .thanks to the person who came for collection
      viswanadha kumar28 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 UsCentresCareersEmedic 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