The reverse triiodothyronine measurement in serum is used to diagnose euthyroid sick syndrome.
More Information
Reverse Τ3 or reverse triiodothyronine (RT3) is an isomer of triiodothyronine (T3). It is derived from thyroxine and is considered to be an inactive form of the hormone. Reverse triiodothyronine increases in conditions such as euthyroid sick syndrome. Euthyroid sick syndrome or Low T3 and T4 Syndrome is a state of adaptation or dysfunction of negative feedback control of the thyroid, where T3 or T4 levels are at abnormal levels, but the thyroid is functioning normally. This condition often occurs in hunger or fasting, in pneumonia, sepsis, trauma, cardiopulmonary bypass, malignancy, stress, heart failure, hypothermia, myocardial infarction, chronic renal failure, liver cirrhosis, and cirrhosis.
Reverse triiodothyronine is high in patients receiving medications such as propylthiouracil, propranolol, amiodarone, dexamethasone, and anesthetic halothane.
Important Note
Laboratory test results are the most critical parameter for diagnosing and monitoring all pathological conditions. Between 70 to 80% of diagnostic decisions are based on laboratory tests. Correctly interpreting laboratory results allows a doctor to distinguish "healthy" from "diseased."
Laboratory test results should not be interpreted from the numerical result of a single analysis. Test results should be analyzed based on each case and family history, clinical findings, and the results of other laboratory tests and information. Your physician should explain the importance of your test results.
At Diagnostiki Athinon, we answer any questions you may have about the test you perform in our laboratory and contact your doctor to ensure you receive the best possible medical care.
