Compare this test’s laboratory options
Thyroid Peroxidase Abs
Quest Diagnostics1 test optionFrom $21.00
Thyroid Peroxidase Abs
Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
DetailsThyroid Peroxidase Antibodies (TPO) Test – This test is crucial for diagnosing various thyroid conditions, including endemic goiter, Graves' Disease, autoimmune thyroiditis, Addison's Disease, insulin-dependent diabetes mellitus, Hashimoto's Disease, and polyendocrine auto-immunopathies. It helps in understanding if the immune system is attacking the thyroid, which can lead to these conditions.
What patients is this test right for?This test is particularly useful for individuals showing symptoms of thyroid disorders or those with a family history of thyroid diseases.
Symptoms of thyroid disorders may include:• Unexpected weight changes
• Changes in energy levels or mood
• Irregular heart rate
• Swelling in the neck
• Feeling too hot or cold
What type of sample is required for this test?1 mL serum. A simple blood draw is needed.
Test Resources • https://education.questdiagnostics.com/faq/FAQ202
• https://www.questdiagnostics.com/healthcare-professionals/clinical-education-center/faq/faq290
Additional test information
This test is crucial for diagnosing various thyroid conditions, including endemic goiter, Graves' Disease, autoimmune thyroiditis, Addison's Disease, insulin-dependent diabetes mellitus, Hashimoto's Disease, and polyendocrine auto-immunopathies.
Collection and processing
- Sample type: Serum
- Fasting: No
- Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Serum. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: No. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should be available in 2 – 5 business days after the sample is collected. Timing can change after collection or if a laboratory requires additional review.
About this test
DetailsThyroid Peroxidase Antibodies (TPO) Test - This test is crucial for diagnosing various thyroid conditions, including endemic goiter, Graves' Disease, autoimmune thyroiditis, Addison's Disease, insulin-dependent diabetes mellitus, Hashimoto's Disease, and polyendocrine auto-immunopathies. It helps in understanding if the immune system is attacking the thyroid, which can lead to these conditions.
What patients is this test right for?This test is particularly useful for individuals showing symptoms of thyroid disorders or those with a family history of thyroid diseases.
Symptoms of thyroid disorders may include:• Unexpected weight changes
• Changes in energy levels or mood
• Irregular heart rate
• Swelling in the neck
• Feeling too hot or cold
What type of sample is required for this test?1 mL serum. A simple blood draw is needed.
Test Resources • https://education.questdiagnostics.com/faq/FAQ202
• https://www.questdiagnostics.com/healthcare-professionals/clinical-education-center/faq/faq290
Additional details
This test is crucial for diagnosing various thyroid conditions, including endemic goiter, Graves' Disease, autoimmune thyroiditis, Addison's Disease, insulin-dependent diabetes mellitus, Hashimoto's Disease, and polyendocrine auto-immunopathies.
Highlighted health areas
- Autoimmune
- Thyroid
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- Thyroid Peroxidase Antibodies (TPO)