Thyroid Profile Blood Test

Thyroid Profile (T3T4T7) Blood Test

For those that suspect thyroid problems are the culprit of their ailments, a Thyroid Profile (T3T4T7) blood test can be extremely illuminating.  Possible indications of a thyroid problem are being tired, anxious, uptight, or experiencing weight gain or loss.  Blood testing the thyroid can uncover many issues that can lead to a number of medical conditions ranging from problems with metabolism, fatigue and general feelings of poor health. This blood test is commonly ordered for individuals with suspected hyperthyroidism, hypothyroidism, thyroid cancer and as a screening in newborns. This blood testing is also commonly used to monitor the levels of hormones in those individuals that are on thyroid supplements.  The thyroid profile blood test is an frequently ordered with a TSH blood test to evaluate thyroid health.

 Normal Blood Tests Range

Though each lab has different measurements the average ranges for this blood test is as follows:

  • T3 (tri-iodothyronine) ranges from 36.0 to 40.0. An increased level may be suggestive of hyperthyroidism, thyrotoxicosis, hypoproteinemia, nephrosis or neoplasm. Decreased levels of the T3 might suggest pregnancy, hypothyroidism or that the patient is taking birth control pills.
  • T4 (tetra-iodothyronine) ranges from 7.0 to 9.0. An increased level on the results of the blood test might suggest hyperthyroidism, thyrotoxicosis, or pregnancy. A decreased level might suggest hypothyroidism, myxedema, nephrosis or simmonds disease.
  • T7 (FTI) or free thyroid index ranges from 2.6 to 3.6.

A Good Screening

Many physicians make the Thyroid blood tests a part of their patients annual checkup. Thyroid problems can be present at any age and can be treated through medication, diet and other medical procedures. It is important to have the Thyroid Profile (T3T4T7) blood test if you have weight gain or loss, feel run down, puffiness around the eyes, aches in the joints or hands, have trouble getting pregnant or feelings of depression.