If you need to know which are the T3 reference ranges or you require more information about the role of T3 in the blood you can visit: Normal T3 level in the blood
A T3 (Triiodothyronine) level in the blood higher than normal range may be a sign of hyperthyroidism, a situation that occurs when the thyroid gland produces too much of the thyroid hormones.
T3 values in the blood should be studied along with T4 hormone (thyroxine) and TSH (thyroid-stimulating hormone) values to give a better diagnosis.
There are two types of hyperthyroidism:
T3 blood values are usually given in ng/ml but sometimes you can see these values in nmol/l following the International System of Units (SI). In case your values are in nmol/l you can convert them using this tool:
Hypertriiodothyroninemia or high T3 blood levels mean:
Your total T3 blood level is very high and it may be a sign of hyperthyroidism.
If the TSH (thyroid-stimulating hormone) value is above the normal range is a sign of primary hyperthyroidism. If the TSH value is below the normal range is a sign of secondary hyperthyroidism.
T3 and TSH are more precise to diagnose hyperthyroidism than T4 (thyroxine) values.
An additional test of free T3 in the blood can be asked in order to obtain more information about the disorder.
If your T3 level in the blood is high, you may suffer from palpitations, weight loss, insomnia, irritability or menstrual irregularities.
There are some health circumstances or drugs than can raise your T3 level in the blood:
The following diseases may raise the T3 level in the blood:
To reduce the T3 level in the blood you can take, under medical prescription, antithyroid drugs.
Cinnamon intake may help to reduce the level of T3 in the blood.
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The following values are considered to be above the normal range:
IMPORTANT: These levels are expressed in ng/ml. They are an example of a healthy man of about 45 years old with no known disease and not taking any medication. The ranges can be different depending on the laboratory or on your personal circumstances.
|2.1 ng/ml||2.2 ng/ml||2.3 ng/ml||2.4 ng/ml||2.5 ng/ml||2.6 ng/ml||2.7 ng/ml||2.8 ng/ml|
|2.9 ng/ml||3 ng/ml||3.1 ng/ml||3.2 ng/ml||3.3 ng/ml||3.4 ng/ml||3.5 ng/ml||3.6 ng/ml|
|3.7 ng/ml||3.8 ng/ml||3.9 ng/ml||4 ng/ml||4.1 ng/ml||4.2 ng/ml||4.3 ng/ml||4.4 ng/ml|
|4.5 ng/ml||4.6 ng/ml||4.7 ng/ml||4.8 ng/ml||4.9 ng/ml||5 ng/ml||5.1 ng/ml||5.2 ng/ml|
|5.3 ng/ml||5.4 ng/ml||5.5 ng/ml||5.6 ng/ml||5.7 ng/ml||5.8 ng/ml||5.9 ng/ml||6 ng/ml|