Thyroid Profile (T3T4T7) Blood Test
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
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