Thyroid Antibodies Panel Blood Test

Quick Facts

• Sample: Blood
• Fasting: No fasting required; stop biotin at least 72 hours prior to collection; avoid collection during or after heparin administration
• Turnaround: 2-3 business days. May take longer based on weather, holiday, or lab delays.

What's Included

Thyroid Peroxidase Antibodies (TPO)

• Thyroid Peroxidase (TPO) Ab: Measures antibodies to thyroid peroxidase, an enzyme involved in thyroid hormone production, to help evaluate hypothyroidism and thyroiditis.

Thyroid Antithyroglobulin Antibody (TAA)

• Thyroglobulin Antibody: Measures antibodies against thyroglobulin, a protein used in thyroid hormone production, to help evaluate enlarged thyroid glands (goiters) and follow up on abnormal thyroid test results.

Benefits

• Screens for autoimmune activity affecting the thyroid gland.
• Combines two antibody markers for a broader thyroid picture.
• Supports follow-up evaluation after abnormal T3, T4, or TSH results.
• Requires no fasting, making preparation simple.
• Results typically available within 2-3 days.

Who Is This Test For?

• Individuals experiencing symptoms associated with thyroid dysfunction.
• People with a known autoimmune condition who develop thyroid-related symptoms.
• Those with abnormal T3, T4, or TSH results seeking further evaluation.
• Individuals with a family history of thyroid disorders.
• Anyone wanting a general screening of thyroid-related autoimmune markers.

How It Works

1. Order Your Test Online
2. Visit a Local Lab
3. Get Results Online

FAQ

1. What is the purpose of this panel?

This panel measures two thyroid antibodies: Thyroid Peroxidase (TPO) Ab and Thyroglobulin Antibody. Together, these markers help screen for autoimmune activity affecting the thyroid and may provide information about chronic thyroid inflammation or dysfunction. This panel does not diagnose a specific thyroid condition on its own.

2. When might I consider ordering this panel?

You may consider this panel if you have symptoms that may relate to thyroid function, such as fatigue, weight changes, or irregular heart rate. It may also be useful after thyroid results such as T3, T4, or TSH show signs of dysfunction, or for monitoring a known autoimmune condition with possible thyroid involvement.

3. Do I need to fast or prepare before this test?

Fasting is not required. Stop taking biotin at least 72 hours before collection, and do not collect the sample during or after heparin administration.

4. How quickly will I get results?

Results are typically available in 2–3 days. Weather, holidays, or laboratory delays may extend this timeframe.

5. How do I interpret the results?

Patterns across both antibody markers may provide more useful context than one result alone. A healthcare provider can interpret the results alongside your overall health history and other thyroid testing.

Disclaimer: Reference ranges may vary by laboratory. Listed ranges are general guidelines and may differ from those used by the performing lab. Always consult your healthcare provider for interpretation.

6. What should I do if my results are outside the expected range?

Share your results with your healthcare provider. They can determine whether further testing or evaluation is appropriate based on your full health picture.

7. How often should I get tested?

Testing frequency varies by individual circumstances. Follow your healthcare provider’s guidance, particularly if you have ongoing symptoms or a known autoimmune condition.

Pre-test preparation

No fasting is required. Patient should stop biotin consumption at least 72 hours prior to the collection. Collection should not occur during or after administration of heparin. Do not stop prescribed medication unless instructed by your healthcare provider.