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Free Thyroxine T4 Test. Thyroid disorder is the second most common endocrine disease to affect women. Free thyroxine is a better indicator than total t4 in that it is not affected by levels of t4 binding proteins.
Normal Thyroid Hormone Levels What Are Normal Thyroid Hormone Levels Normal Thyroid Hormone Level Symptoms Treatment Diagnosis - Ucla from www.uclahealth.org
Free t4, which tests for the amount of t4 that is available in the body, should range between 0.8 to 1.8 nanograms per deciliter (ng/dl). A high level of tsh and a low level of t4 in the blood could mean you have an underactive thyroid. Thyroid disorder is the second most common endocrine disease to affect women.
The test identifies any problem with thyroid gland functioning.
Thyroid functions tests advised are: T4 test is usually performed as part of a thyroid profile test. Free thyroxine is often more useful than total thyroxine in assessing thyroid function. Many doctors today use the free t4 test because it's more accurate than the test for bound t4.