Thyroid-stimulating Hormone (TSH) Blood Test

The Thyroid-stimulating Hormone (TSH) Blood Test checks thyroid gland function.

Quest
LabCorp

Sample Report

Test Code: 004259

CPT Code: 84443

Also Known As: Third Generation TSH; Thyrotropin; hTSH; TSH Test

Methodology:

Electrochemiluminescence immunoassay (ECLIA)

Specimen Type: Blood

Preparation:

No fasting required. Stop biotin consumption at least 72 hours prior to the collection.

Test Results:

1-2 days. May take longer based on weather, holiday or lab delays.

Sample Report

Test Code: 899

CPT Code: 84443

Also Known As: Third Generation TSH; Thyrotropin; hTSH; TSH Test

Methodology:

Immunoassay (IA)

Specimen Type: Blood

Preparation:

No fasting required. Stop biotin consumption at least 72 hours prior to the collection.

Test Results:

1-2 days. May take longer based on weather, holiday or lab delays.

Description

TSH is a hormone that is produced by the pituitary gland. This gland is responsible for making sure that the thyroid hormones are released into the blood. TSH test is a thyroid function test used to assist in the diagnosis of thyroid disorders, monitor thyroid replacement therapy in patients with hypothyroidism, diagnose and/or monitor female infertility problems, and occasionally the test is used to help evaluate pituitary gland function. While the test is most often used to help diagnose thyroid disorders in adults, expert opinions vary on the benefits of screening, and at what age to begin testing.

One type of thyroid disorder is Hypothyroidism which means that the thyroid gland is underactive. Some symptoms that can be related to this disorder are:

weight gain
dry skin
constipation
a feeling of being too cold
tiredness

Another type of thyroid disorder is Hyperthyroidism which means that the thyroid gland is overactive. Symptoms associated with this disorder may include: