Quick Facts
- Sample: Blood
- Fasting: No fasting is required. Stop biotin consumption at least 72 hours prior to collection. Collection should not occur during or after heparin administration.
- Turnaround: 4-6 days. May take longer based on weather, holiday, or lab delays.
What's Included
- Thyroid Peroxidase (TPO) Ab: Measures antibodies to thyroid peroxidase, an enzyme involved in thyroid hormone production, to help evaluate autoimmune thyroid activity.
- Thyroglobulin Antibody: Measures antibodies against thyroglobulin, a protein used by the thyroid to produce hormones, helping to evaluate thyroid autoimmune activity.
- Reverse T3, Serum: Measures the biologically inactive form of T3 (triiodothyronine), reflecting how the body is converting thyroid hormone T4.
Benefits
- Checks for thyroid antibodies linked to autoimmune thyroid activity.
- Measures Reverse T3 to assess thyroid hormone conversion.
- Offers a broader view of thyroid health in one panel.
- Requires no fasting for your convenience.
- Fast turnaround supports timely follow-up with your provider.
Who Is This Test For?
- Individuals whose provider has recommended thyroid antibody evaluation.
- People with a personal or family history of thyroid concerns.
- Those following up on prior thyroid hormone test results.
- Individuals with other autoimmune conditions being evaluated for thyroid involvement.
- People interested in a broader look at thyroid hormone conversion.
How It Works
- Order Your Test Online
- Visit a Local Lab
- Get Results Online
FAQ
1. What is the purpose of this test?
This panel measures thyroid peroxidase (TPO) antibodies, thyroglobulin antibodies (TAA), and Reverse T3. The two antibody markers help evaluate autoimmune activity affecting the thyroid, while Reverse T3 reflects how your body is converting thyroid hormone T4. Together, these markers provide a broader picture of thyroid health. This panel does not diagnose any condition on its own.
2. Who would benefit from this test?
This panel may be useful for individuals whose healthcare provider wants to evaluate thyroid antibody activity, those with a personal or family history of thyroid concerns, and people following up on earlier thyroid hormone testing. It may also be considered for those with other autoimmune conditions who are being evaluated for possible thyroid involvement.
3. When should I order this panel?
You may consider ordering this panel as part of a broader thyroid health evaluation, for follow-up after other thyroid tests, or as part of ongoing monitoring as directed by your healthcare provider. This test does not diagnose a condition on its own.
4. Do I need to fast before this test?
No fasting is required. Stop biotin consumption at least 72 hours prior to collection. Collection should not occur during or after administration of heparin.
5. How quickly will I get results?
Results are typically available in 4-6 days. This may take longer based on weather, holiday, or lab delays.
6. How do I interpret the results?
Patterns across biomarkers are often more meaningful than any single value on its own. Reviewing your antibody and Reverse T3 results together with your healthcare provider can offer more helpful context than looking at one marker alone.
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.
7. What should I do if my results are abnormal?
If any of your results fall outside the expected range, share them with your healthcare provider. They can help interpret your results in the context of your health history and determine whether any next steps are appropriate.
8. How often should I get tested?
Testing frequency varies by individual circumstances. Follow-up testing should be done as directed by your healthcare provider based on your health history and prior results.
9. Why early detection matters
Monitoring thyroid antibody activity and hormone conversion over time may support earlier awareness of changes in thyroid health. This panel is intended to support ongoing awareness and discussion with your healthcare provider, not to guarantee detection of any condition.
Pre-test preparation
No fasting is required. Stop biotin consumption at least 72 hours prior to the collection. Collection should not occur during or after the administration of heparin.
