Disclaimer: Humans should consult a doctor before taking medical advice.
Why you should order Thyroid levels.
Thyroid levels include T3, T4, and TSH in the body. T3 and T4 circulate in the blood bound and linked to molecules of protein. The free T4 and free T3 defines the bodys true thyroid levels.. Thyroid levels of hormones that are free react with cell receptors.
Thyroid levels are low in hypothroidism. A lot of TSH is excreted by the pituitary thus increasing the TSH thyroid levels. Thyroid tests are performed when blood TSH thyroid levels are low, often kept down to levlels below 0.01 mIU per L, hyperthyroidism occurs. In the beginning stages of dysfunctional thyroid or medicine changes, thyroid level may appear normal in patients. Due to this, an FT3 and FT4 thyroid level test needs to be performed.
T3 is only produced in small amounts by the thyroid gland. The peripheral tissue of the liver manufactures T3 by the conversion of T4 to T3.
What does all of this mean for the patient? An elevated TSH result is often due to hypothyroidism, or an underactive thyroid. A decreased TSH lab thyroid level can be attributed to an overactive thyroid gland.