What Is a Normal Thyroid Test Results?


Quick Answer

Normal TSH (thyroid stimulating hormone) levels for a healthy adult should range between 0.4 to 4.0 mlU/L, when taking a thyroid test, according to the National Institutes of Health. Thyroid levels can vary throughout the day. T

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Full Answer

The test should be taken in the morning for the most accurate results. It is important to understand that many factors can influence a thyroid test. For instance, certain medications may affect the results, according to the National Institutes of Health. Pregnancy and other medical conditions, such as thyroid disorder and thyroid cancer, can also affect the results. It is best to consult a health-care provider to ensure you understand your test results.

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