Tests for thyroid function: TSH, T3, T4

The small but essential thyroid gland plays a crucial role in regulating metabolism and many other bodily functions. To assess its condition, doctors use a series of thyroid function tests that measure thyroid hormone levels. At Elytis Hospitalpatients benefit from fast and accurate diagnostic services by experienced specialists.

What thyroid hormones are measured?

• TSH (thyroid stimulating hormone): produced by the pituitary gland, TSH stimulates the thyroid to produce thyroid hormones. Its level is a sensitive indicator of thyroid function.
• T3 (triiodothyronine): one of the two main hormones produced by the thyroid, T3 plays an active role in regulating metabolism.
• T4 (thyroxine): the other main hormone produced by the thyroid, T4 is converted to T3 in the tissues.

The Elytis Hospitalpatients can have all these tests performed in one place, benefiting from state-of-the-art technology and interpretation of results by experienced endocrinologists.

When are these tests recommended?

Thyroid function tests are recommended in the following situations:

• Suspected hypothyroidism (low thyroid activity): symptoms may include fatigue, weight gain, constipation, dry skin and depression.
• Suspicion of hyperthyroidism (increased thyroid activity): symptoms may include palpitations, weight loss, anxiety, insomnia and tremors.
• Monitoring treatment for thyroid conditions: people diagnosed with hypothyroidism or hyperthyroidism should have these tests regularly to monitor the effectiveness of treatment.
• Presence of thyroid nodules: if thyroid nodules are found, tests are recommended to evaluate thyroid function and rule out thyroid cancer.
• During pregnancy: hormonal changes during pregnancy can affect thyroid function. Doctors may recommend tests to ensure healthy fetal development.
• Unexplained symptoms: sometimes seemingly unrelated thyroid symptoms can be caused by thyroid dysfunction. Tests can help identify the cause.

The Elytis Hospitalwe understand the importance of an accurate and rapid diagnosis. That's why we offer our patients access to state-of-the-art laboratory tests and a team of specialists ready to interpret the results and recommend the most appropriate treatment plan.

What information do thyroid function tests provide?

• TSH level: a high level may indicate hypothyroidism, while a low level may indicate hyperthyroidism.
• T3 and T4 levels: these tests provide additional information about thyroid activity and can help diagnose certain thyroid conditions.
• Thyroid antibodies: measuring thyroid antibodies can help diagnose autoimmune diseases that affect the thyroid, such as Hashimoto's thyroiditis and Graves' disease.

The Elytis Hospitalwe make sure that every patient receives a clear and detailed interpretation of their test results. Our doctors take the time to explain the significance of the values obtained and to answer any questions patients may have.

Why choose Elytis Hospital for thyroid function tests?

• State-of-the-art technology: Elytis has modern laboratory equipment that ensures accurate and fast results.
• Experienced team of specialists: our endocrinologists have extensive experience in the diagnosis and treatment of thyroid disorders.
• Comprehensive services: we offer a full range of thyroid function tests as well as other investigations needed for an accurate diagnosis.
• Attention to detail: at Elytis, every patient is treated with care and respect. We ensure that our patients feel comfortable and safe throughout the diagnostic and treatment process.
• Interpretation of results: at Elytis, doctors make sure that every patient understands the exact results of the tests.

Thyroid function tests are essential for diagnosing and monitoring thyroid disorders. At Elytis Hospital, patients benefit from accurate and fast diagnostic services performed by experienced specialists.

If you have symptoms suggestive of thyroid dysfunction or if you would like to have a routine check-up, please contact us to schedule a consultation!

Latest medical review:

09.03.2025, Dr. Mirela Tîrnovan - Medical Specialist

References:

• Klee, George G. (Dr.), Hay, Ian D."Biochemical Testing of Thyroid Function". Endocrinology and Metabolism Clinics of North America, 1997, vol. 26, no. 4, 763 - 775.
• Michael T. Sheehan (Dr.). "Biochemical Testing of the Thyroid: TSH is the Best and, Oftentimes, Only Test Needed - A Review for Primary Care". Clinical Medicine and Research, 2016, vol. 14, no. 2, pg. 83 - 92.
• Soh, Shui-Boon, Aw, Tar-Choon. "Laboratory Testing in Thyroid Conditions - Pitfalls and Clinical Utility". Annals of Laboratory Medicine, 2019, vol. 39, no. 3.