According to the American Thyroid Association, you should begin screening for thyroid dysfunction at age 35, and take follow-up tests every 5 years.7
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The thyroid gland is located at the base of your neck and produces a hormone that influences every cell, tissue, and organ in the body. It may be small, but it can have a big impact on your health and wellbeing, influencing how fast your heart beats, how quickly your body burns calories and even your mood and fertility.
The Standard Thyroid Test measures both thyroid-stimulating hormone (TSH) and Free T4 (thyroxine) in your blood to assess thyroid function. It screens for specific thyroid health conditions such as underactive thyroid (hypothyroidism) and overactive thyroid (hyperthyroidism).
Preparation: If you’re taking a supplement containing biotin (also called vitamin B7 or B8, vitamin H, or coenzyme R), commonly found in products promoting nail, skin and hair health, it is recommended that you wait at least 72 hours from your last dose before sample collection.
Thyroid tests that measure both TSH and Free T4 can be used together to screen for thyroid conditions, including hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid).¹
Thyroid tests that measure both TSH and Free T4 can be used together to screen for thyroid conditions, including hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid).¹
If you are experiencing symptoms such as fatigue or unexpected weight changes, this test will help screen for thyroid conditions that may be causing them.
Women are five to eight times more likely than men to have thyroid problems.
Hypothyroidism is a leading cause of difficulty in achieving and maintaining pregnancy.2
Undiagnosed thyroid disease may put you at risk for certain conditions such as cardiovascular diseases, osteoporosis and infertility.
Undiagnosed thyroid disease may put you at risk for certain conditions such as cardiovascular diseases, osteoporosis and infertility.
Most thyroid conditions can be managed with medication.2
1. Testing.com. Thyroid Stimulating Hormone (TSH). Testing.com website. Updated November 09, 2021. Accessed October 26, 2022. https://www.testing.com/tests/thyroid-stimulating-hormone-tsh/
2. American Thyroid Association. General Information/Press Room. American Thyroid Association website. Accessed October 26, 2022. www.thyroid.org/media-main/press-room/
3. Medline Plus. Thyroid tests. Accessed August 9, 2023. https://medlineplus.gov/thyroidtests.html
4. Mayo Clinic. Hypothyroidism (underactive thyroid). December 10, 2022. Accessed August 9, 2023. https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284
5. Mayo Clinic. Hyperthyroidism (underactive thyroid). November 30, 2022. Accessed August 9, 2023. https://www.mayoclinic.org/diseases-conditions/hyperthyroidism/symptoms-causes/syc-20373659
6. Cleveland Clinic. Thyroid-stimulating hormone (TSH) levels. July 25, 2022. Accessed August 9, 2023.
7. Ladenson PW, Singer PA, Ain KB, Bagchi N, Bigos ST, Levy EG, et al. American Thyroid Association guidelines for detection of thyroid dysfunction [published erratum appears in Arch Intern Med 2001;161:284]. Arch Intern Med. 2000;160:1573-5.
<p>1. Testing.com. Thyroid Stimulating Hormone (TSH). Testing.com website. Updated November 09, 2021. Accessed October 26, 2022. <a href="https://www.testing.com/tests/thyroid-stimulating-hormone-tsh/" target="_blank">https://www.testing.com/tests/thyroid-stimulating-hormone-tsh/</a></p> <p>2. American Thyroid Association. General Information/Press Room. American Thyroid Association website. Accessed October 26, 2022. <a href="http://www.thyroid.org/media-main/press-room/" target="_blank">www.thyroid.org/media-main/press-room/</a></p> <p>3. Medline Plus. Thyroid tests. Accessed August 9, 2023. <a href="https://medlineplus.gov/thyroidtests.html" target="_blank" title="Thyroid tests">https://medlineplus.gov/thyroidtests.html</a></p> <p>4. Mayo Clinic. Hypothyroidism (underactive thyroid). December 10, 2022. Accessed August 9, 2023. <a href="https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284" target="_blank" title="Hypothyroidism (underactive thyroid)">https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284</a></p> <p>5. Mayo Clinic. Hyperthyroidism (underactive thyroid). November 30, 2022. Accessed August 9, 2023. <a href="https://www.mayoclinic.org/diseases-conditions/hyperthyroidism/symptoms-causes/syc-20373659" target="_blank" title="Hyperthyroidism (underactive thyroid)">https://www.mayoclinic.org/diseases-conditions/hyperthyroidism/symptoms-causes/syc-20373659</a></p> <p>6. Cleveland Clinic. Thyroid-stimulating hormone (TSH) levels. July 25, 2022. Accessed August 9, 2023. </p> <p>7. Ladenson PW, Singer PA, Ain KB, Bagchi N, Bigos ST, Levy EG, et al. American Thyroid Association guidelines for detection of thyroid dysfunction [published erratum appears in Arch Intern Med 2001;161:284]. <i>Arch Intern Med. </i>2000;160:1573-5.</p>
Measures the levels of thyroid stimulating hormone (TSH) in the blood to evaluate thyroid function. TSH is a hormone produced by the pituitary gland and stimulates the thyroid gland to produce T4 (thyroxine) and T3 (triiodothyronine), two hormones that play critical roles in controlling the body’s metabolism.
A hormone produced by the thyroid gland that is responsible for regulating body temperature, heart rate, and metabolism.
View your easy-to-read results online in your Labcorp Patient™ account, including Linked Accounts. For certain results that require prompt attention, you will also be contacted by phone or mail.
If you have concerns about your thyroid health, it’s important to know the early warning signs of thyroid problems.
Symptoms of hypothyroidism (an underactive thyroid) may include4:
Symptoms of hyperthyroidism (an overactive thyroid) may include5:
Taking our Standard Thyroid Test can help you learn more about your body’s thyroid levels and whether you might have hypothyroidism or hyperthyroidism.
According to the American Thyroid Association, you should begin screening for thyroid dysfunction at age 35, and take follow-up tests every 5 years.7
You should take our Standard Thyroid Test if you have questions about your thyroid health or are experiencing early warning signs or symptoms of thyroid problems.
Your testing will be performed in a CLIA-certified clinical laboratory. Labcorp provides leading-edge medical laboratory tests and services through a national network of primary clinical laboratories and specialty testing laboratories. Our labs perform regular quality assurance testing to ensure our results are accurate.
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