在新选项卡中打开链接
  1. Cleveland Clinic
    https://my.clevelandclinic.org › health › diagnostics

    T4 (Thyroxine) Test: What It Is, Function, Purpose & Levels

    • A T4 test is a blood test that measures the level of thyroxine, a thyroid hormone, in your blood. It can help diagnose thyroid conditions, such as hyperthyroidism or hypothyroidism, and monitor thyroid hormone replace… 展开

    What Type of Results Do You Get For A T4 (Thyroxine) Test?

    Blood test reports, including T4 test reports, usually provide the following information: 1. … 展开

    Cleveland Clinic
    What Are Normal Free T4 Levels?

    Normal levels of free T4 vary based on your age. In general, normal ranges of free T4 for healthy people include: 1. Children up to 5 years old: 0.8 – 2.8 nanograms per deciliter (ng/dL). … 展开

    Cleveland Clinic
    What Happens When T4 (Thyroxine) Levels Are Too High?

    If you have higher-than-normal T4 or free T4 levels, it could indicate thyrotoxicosis. This can result from several situations and conditions, including hyperthyroidism (overactive thyro… 展开

    Cleveland Clinic
    What Happens When T4 (Thyroxine) Levels Are Too Low?

    If you have lower-than-normal T4 levels, it usually indicates hypothyroidism (underactive thyroid). Hypothyroidism has several causes, including certain autoimmune dis… 展开

    Cleveland Clinic
    Should I Be Concerned If I Have A Low Or High T4 (Thyroxine) Test Result?

    Free T4 test results are usually accurate. However, certain factors may interfere with the results, including: 1. Certain medications or supplements. 2. Pregnancy. 3. Severe illnes… 展开

    Cleveland Clinic
    What is T4 free level supposed to be?
    The normal range for free T 4 in adults is 0.8 to 1.8 nanograms per deciliter (ng/dL). A level of free T 4 that is higher than normal could mean you have an overactive thyroid. Conditions associated with hyperthyroidism include Graves disease, an autoimmune disorder. Abnormally low free T 4 levels may signal hypothyroidism. This means your thyroid is not making enough hormones.
    urmc.rochester.edu
    反馈
    目录
    What Type of Results Do You Get For A T4 (Thyroxine) Test?
    What Are Normal Free T4 Levels?
    What Happens When T4 (Thyroxine) Levels Are Too High?
    What Happens When T4 (Thyroxine) Levels Are Too Low?
    Should I Be Concerned If I Have A Low Or High T4 (Thyroxine) Test Result?
    What is T4 free level supposed to be?
     
  1. This test measures the level of free T 4, or free thyroxine, in your blood. A free T 4 test is used to find out how well your thyroid gland is working.

    Free T4 - University of Rochester Medica…

    www.urmc.rochester.edu/encyclopedia/content?co…
    The free T4 index (FTI) is a blood test that can help diagnose a thyroid condition such as Hashimoto's thyroiditis or Graves' disease.

    Free T4 Index (FTI) and Its Uses, Side Effe…

    www.verywellhealth.com/free-t4-index-procedure-4…

    T4 levels can be measured with either a free T4 test or a total T4 test:

    • A free T4 test measures the amount of free T4 in your blood. Medical experts believe this test is more accurate than a total T4 test, so it's used more often.
    • A total T4 test measures free and bound T4 together.

    Thyroxine (T4) Test - MedlinePlus

    medlineplus.gov/lab-tests/thyroxine-t4-test/
    The Free T4 test is used to assess thyroid function, indicate hypothyroidism or hyperthyroidism, help diagnose thyroid disease, and evaluate the effectiveness of thyroid treatment.

    Free T4 Levels Test | Thyroid Testing (FT4…

    www.healthlabs.com/free-t4-testing-thyroxine-ft4

    What Is a Free Thyroxine Test?

    • Purpose of Test A healthcare provider may order a free T4 test if a patient is having symptoms of a thyroid disease, such as weight loss, a rapid heart rate, and sweating associated with hyperthyroidism (when your thyroid produces too many hormones). ...
    • Risks and Contraindications ...
    • Before the Test ...
    • Interpreting Results ...
    • A Word From Verywell ...

    Free Thyroxine Test: Uses, Side Effects, Pr…

    www.verywellhealth.com/free-thyroxine-test-4587415
  2. 其他用户还问了以下问题
    Is your free T4 really in the normal range?
    The normal range for free T4 in adults is 4.6 to 11.2 micrograms per deciliter (mcg/dL). A normal T4 test result means your thyroid gland works like it should. High or Low T4 A high T4 result could mean you have hyperthyroidism. A low T4 test result is a sign of hypothyroidism. Your hypothalamus and pituitary glands control the release of T4.

    T4 Blood Test: Purpose, Symptoms, High/Low Range

    restartmed.com
    What happens if free T4 is high?
    Thyroxine (T 4) is the major hormone produced by the thyroid gland and it can be measured as free T 4 in the blood. There have been studies suggesting that higher levels of free T 4 in the blood may be associated with an increased risk of developing a solid cancers (for example, lung, breast, prostate, gastrointestinal (GI) cancers).

    T4, Free - Lab Results explained | HealthMatters.io

    thyroid.org
    What is T4 free level supposed to be?
    The normal range for free T 4 in adults is 0.8 to 1.8 nanograms per deciliter (ng/dL). A level of free T 4 that is higher than normal could mean you have an overactive thyroid. Conditions associated with hyperthyroidism include Graves disease, an autoimmune disorder. Abnormally low free T 4 levels may signal hypothyroidism. This means your thyroid is not making enough hormones.

    T4 levels: What is a normal T4 level, and how it is tested?

    urmc.rochester.edu
    What is the normal range for free T4 and TSH?
    Normal thyroid levels, specifically for TSH (thyroid stimulating hormone), fall within the range of 0.5 to 5.0 mIU/L (milli-international units per liter). In adults, normal total T4 levels are within 5.0 to 12.0μg/dL (micrograms per deciliter). Also in adults, the normal range for T3 levels is between 80 to 220 ng/dL (nanograms per deciliter).

    Vol 11 Issue 2 p.3-4 | American Thyroid Association

    verywellhealth.com
    反馈
  3. American Thyroid Association
    https://www.thyroid.org › thyroid-funct…

    Thyroid Function Tests - American Thyroid Association

    2023年9月5日 · Learn about the different tests to evaluate thyroid function, including TSH, T4, T3, free T4, reverse T3, and thyroid antibodies. Find out how to interpret the results and what they mean for your thyroid health.

  4. WebMD
    https://www.webmd.com › a-to-z-guides

    T4 Blood Test: What Is it Used For? - WebMD

    2024年3月16日 · A T4 blood test measures the level of thyroxine (T4), a hormone made by your thyroid gland, in your blood. It can help diagnose and monitor thyroid disease, pituitary disorders, and other conditions that affect your …

  5. Healthline
    https://www.healthline.com › health

    T4 Test: Purpose, Procedure, Abnormal Test Results

    2019年10月25日 · A free T4 test measures only the free T4 in your blood. Because free T4 is what’s available to your body for use, a free T4 test is often preferred over a total T4 test.

  6. Verywell Health
    https://www.verywellhealth.com

    Free T4 Index (FTI) and Its Uses, Side Effects, and Results

    2024年9月27日 · The free thyroxine index (FTI) test measures how much thyroxine, a thyroid hormone, is in your blood. It can help diagnose thyroid disorders, but it is not used very much today and may be inaccurate due to …

  8. University of Rochester Medical Center
    https://www.urmc.rochester.edu › ... › content

    Free T4 - University of Rochester Medical Center

  9. UCSF Health
    https://www.ucsfhealth.org › medical-t…

    Free T4 test - UCSF Health

    2024年2月28日 · Free T4 is the thyroxine that is not attached to a protein in the blood. It is a test for thyroid function and disorders. Learn how to prepare, perform, and interpret the test results.

  10. MedlinePlus
    https://medlineplus.gov › ency › article

    Free T4 test: MedlinePlus Medical Encyclopedia

    2024年2月28日 · Learn about the free T4 test, a blood test that measures the amount of thyroxine in your blood. Find out why you may need this test, how to prepare for it, and what the results mean.

  11. Mount Sinai Health System
    https://www.mountsinai.org › health-library › tests

    Free T4 test Information | Mount Sinai - New York

  12. Ada
    https://ada.com › thyroid

    Free T4 Blood Test (Thyroxine): Your Thyroid’s Health

    2024年12月5日 · What is a free T4 blood test and how can it help diagnose thyroid conditions? Who should get their FT4 tested and how often? Ada’s doctors explain.