Thyroid Tests in Delaware

What this test is

Thyroid tests are laboratory analyses that measure levels of hormones produced by the thyroid gland. These hormones play a crucial role in regulating metabolism, energy levels, and many other bodily functions.

What it measures

• TSH (Thyroid Stimulating Hormone) — reflects the pituitary gland's signal to the thyroid
• Free T4 (Thyroxine) — reflects the main thyroid hormone available for use by the body
• Free T3 (Triiodothyronine) — reflects the active thyroid hormone that regulates metabolism
• Thyroid Peroxidase Antibodies (TPOAb) — reflects antibodies that can indicate autoimmune thyroid disease
• Thyroglobulin Antibodies (TgAb) — reflects antibodies that can indicate autoimmune thyroid disease

What the test involves

This test typically involves a standard blood draw from a vein in your arm. A small sample of blood will be collected and sent to the laboratory for analysis.

Why it is often ordered

Clinicians often order thyroid tests to evaluate symptoms related to an overactive or underactive thyroid gland. They can also be used to monitor thyroid function and the effectiveness of treatment.

Preparation

Follow the specific preparation instructions provided by the laboratory where you will have your sample collected. Some tests may require fasting.

How results are reported

Your test results will be reported to you, usually within a few business days. It is important to note that reference ranges, which indicate what is considered normal, can vary between laboratories.

Before you go

• Fasting requirements
• Collection site hours
• Specific test preparation