Diagnostic tests

Total T3 blood test

A total T3 blood test measures the T3 that is both attached to proteins and floating free in the blood. Triiodothyronine (T3) is a hormone produced by the thyroid gland that helps regulate the body's metabolism. The total T3 test is used to evaluate the overall function of the thyroid gland and can help diagnose conditions such as hyperthyroidism and hypothyroidism.

This page is provided for educational and informational purposes only and does not constitute the provision of medical advice or professional services. The information provided should not be used for diagnosing or treating a health problem or disease, and those seeking personal medical advice regarding any of the tests and conditions referenced above are advised to consult with a licensed clinician. Always seek the advice of your qualified health provider regarding a medical condition and do not disregard professional medical advice or delay in seeking it because of any information on this page. If you think you may have a medical emergency, immediately call 911 or go to the nearest urgent care center or hospital.

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Book a lab collection at your home or office with Getlabs.

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