TSH is a hormone secreted by the pituitary gland. TSH tells the thyroid gland to make thyroid hormones. Measuring the levels of TSH in the blood is used to evaluate thyroid function and diagnose and monitor thyroid abnormalities and disease.
Thyroxine is a hormone produced by the thyroid gland. If the thyroid gland is under active and does not produce enough T4, then the patient can experience symptoms such as weight gain, dry skin, cold intolerance, irregular menstruation, and fatigue. If the thyroid gland is overactive and produces too much T4, the patient can experience symptoms such as increased heart rate, anxiety, weight loss, difficulty sleeping, and tremors in the hands.
This test can help interpret T4 and T3 results and measures the level of proteins that carry the thyroid hormone in the blood.
TPO – Thyroid Peroxidase
Testing for thyroid antibodies, such as thyroid peroxidase antibody (TPO), is primarily ordered to help diagnose anautoimmune thyroid disease and to distinguish it from other forms of thyroid dysfunction. Thyroid autoantibodies develop when a person’s immune system mistakenly targets components of the thyroid gland or thyroid proteins, leading to chronic inflammation of the thyroid (thyroiditis), tissue damage, and/or disruption of thyroid function.
Triiodothyronine (T3) is one of two major hormones produced by the thyroid gland, a small butterfly-shaped organ that lies flat across the windpipe at the base of the throat. The other major thyroid hormone is called thyroxine (T4) and together they help control the rate at which the body uses energy. Almost all of the T3 (and T4) found in the blood is bound to protein. The rest is free (unbound) and is the biologically active form of the hormone. Tests can measure the amount of free T3 or the total T3 (bound plus unbound) in the blood.
Explains how the free T4 test is used, when a free T4 test is ordered, and what the results of a free T4 test might mean. Free thyroxine (free T4) tests help evaluate thyroid function and diagnose thyroid diseases, including hyperthyroidism and hypothyroidism after discovering the thyroid stimulating hormone (TSH) level is abnormal.
Thyroidglobulin/ anti Thyroidglobuli
These antibodies destroy thyroid tissue. This test can find out if you have these antibodies. High levels of antithyroid antibodies may mean that you haveautoimmune hypothyroidism (Hashimoto’s thyroiditis). Or you may have autoimmune hyperthyroidism (Graves’ disease).