Thyroid Profile Blood Test Explained | Health Testing Centers
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Thyroid Profile Blood Test Explained

Order A Thyroid Profile (T3T4T7) Blood Test Now - Doctor's Order Included.

Following is a sample of the results of the Thyroid Profile (T3T4T7) blood test. The reference interval indicates the normal ranges and the flag indicates a result outside of those ranges.

A Thyroid Profile (T3T4T7) blood test is a useful test for anyone suspecting thyroid problems. This blood test can help explain problems associated with fatigue, metabolism, and general feelings of ill health. The Thyroid Profile blood test is also used to monitor hormone levels for individuals that are taking thyroid supplements. Average ranges for the Thyroid Profile blood test are as follows:

  • T3 (tri-iodothyronine): 36.0 - 40.0

Low levels of T3 can be associated with hypothyroidism, pregnancy, or a person taking birth control pills. High levels of T3 can be associated with hyperthyroidism, hypoproteinemia, thyrotoxicosis, nephrosis or neoplasm.

  • T4 (tetra-iodothyronine): 7.0 - 9.0

Low levels of T4 can be associated with hypothyroidism, myxedema, nephrosis or simmonds disease. High levels of T4 can be associated with hyperthyroidism, thyrotoxicosis, or potentially pregnancy.

  • T7 (FTI, free thyroid index): 2.6 - 3.6