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TPO Test (Thyroid Peroxidase Antibody)

This page explains the tpo test (thyroid peroxidase antibody), what it measures, and how to order it. The TPO Test checks for thyroid peroxidase antibodies, which can indicate thyroid issues.

Sample typeBlood draw at a collection lab
ReferralNo referral required

What this test is

The TPO Test measures the level of thyroid peroxidase antibodies in the blood. These antibodies can indicate autoimmune thyroid conditions. It helps in assessing thyroid health and potential inflammation.

What it measures

  • Thyroid Peroxidase Antibodies — reflects potential autoimmune activity against the thyroid

What the test involves

The test involves a standard blood draw, usually from a vein in the arm. The sample is then analyzed for the presence of thyroid peroxidase antibodies.

Why it is often ordered

Clinicians typically order this test to evaluate thyroid function and investigate symptoms of thyroid dysfunction. It helps in diagnosing conditions like hypothyroidism or thyroiditis.

Preparation

Preparation instructions are provided by the lab, so it's important to follow their guidance. Specific requirements may vary.

How results are reported

Results are reported as antibody levels, which can be compared to reference ranges that vary by laboratory. Discuss results with a healthcare provider for interpretation.

Before you go

  • Sample collection method
  • Preparation instructions
  • Result turnaround time

FAQ

Frequently asked questions

What do high levels of TPO antibodies mean?

High levels of TPO antibodies may indicate an autoimmune thyroid disorder. It's important to discuss results with a healthcare provider for accurate interpretation.

Can I eat before the TPO Test?

Preparation instructions, including dietary restrictions, should be confirmed with the lab performing the test. Always follow their specific guidelines.

How long does it take to get TPO Test results?

Results are typically available within 1-3 business days. However, turnaround times can vary depending on the lab.

Why is the TPO Test important?

The TPO Test is important for assessing thyroid health, especially in diagnosing autoimmune thyroid conditions. It helps guide further medical evaluation and treatment.

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