Description

A thyroid comprehensive blood panel is a blood test that measures the levels of hormones and antibodies in your blood to assess thyroid function. It can help detect thyroid disorders like hyperthyroidism, hypothyroidism, Hashimoto's disease, and Graves' disease.

This panel includes the following test:

Free Thyroxine Test (Free T4)

T3 Uptake Test

Thyroid Peroxidase (TPO) Antibodies

Thyroglobulin Antibody (TgAb)

TSH

Fasting not required.

Additional information about each test is listed below:

A free thyroxine test, often called a free T4 test, measures the amount of free thyroxine in your blood. When T4 is created, some of the hormone gets bound to proteins while the rest circulates freely.

A T3 uptake test, also known as a T3 resin uptake (T3RU) test, measures the amount of proteins in the blood that carry thyroid hormone.

Thyroid peroxidase (TPO) antibodies are proteins produced by the immune system in response to damaged thyroid cells. TPO is an enzyme in the thyroid gland that helps produce hormones that regulate growth and metabolism. When thyroid cells are damaged, TPO leaks into the bloodstream, triggering the immune system to produce antibodies. A thyroid peroxidase antibody test measures the amount of these antibodies in the blood. 

A thyroglobulin antibody (TgAb) test measures the level of antibodies in your blood that are made against thyroglobulin, a protein produced by the thyroid gland.

TSH stands for thyroid-stimulating hormone, a hormone produced by the pituitary gland that stimulates the thyroid to make and release hormones.

Fasting not required.