Thyroid Function Testing: What You Can Expect

Thyroid Function

What is Thyroid Function Testing and Health?

Thyroid function testing is an important tool for monitoring and actively managing the health of the thyroid gland. The thyroid is the small, butterfly-shaped gland located in the front of the neck. It produces hormones that are vital for the body’s energy metabolism, and for the normal growth and development of the body.

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What You Can Expect from a Thyroid Function Test

During a thyroid function test, the healthcare practitioner will take a blood sample, which will be tested for the levels of certain hormones. The most common thyroid hormones that are measured include triiodothyronine (T3), thyroxin (T4) and thyroid stimulating hormone (TSH). The results of the test will indicate whether the patient’s thyroid is functioning normally, or if there is a problem, such as an underactive thyroid (hypothyroidism) or an overactive thyroid (hyperthyroidism).

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What Other Factors Can Affect Thyroid Function Test Results?

Apart from the health of the thyroid, several lifestyle and environmental factors can also affect thyroid function test results. In addition to medications that may interfere with the results, the temperature can also have an effect. Blood tests are generally more accurate when taken in the morning when the patient is well rested, so it is important to make sure you have a good nights sleep prior to the test.

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Importance of Thyroid Function Testing for Health

Thyroid function testing is important for diagnosing and tracking the health of the thyroid gland, which is vital for the body’s energy metabolism and for the normal growth and development of the body. By catching any problems with the thyroid at an early stage, the healthcare practitioner can proactively manage the patient’s health and wellbeing.


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