Pacific · TPO Test (Thyroid Peroxidase Antibody)

TPO Test (Thyroid Peroxidase Antibody) in California

This page explains the tpo test (thyroid peroxidase antibody), what it measures, and how to order it. The TPO antibody test measures antibodies that target thyroid peroxidase, an enzyme crucial for thyroid hormone production.

Typical turnaround1-3 business days

Price range$158

PreparationFollow the lab's instructions.

Sample typeBlood draw at a collection lab

ReferralNo referral required

What this test is

Thyroid peroxidase (TPO) antibodies are proteins produced by the immune system that mistakenly attack the thyroid gland. This test detects the presence and level of these antibodies in the blood.

What it measures

Thyroid Peroxidase Antibodies (TPOAb) — reflects immune system activity against the thyroid gland

What the test involves

This test requires a blood sample, which is typically collected from a vein in your arm during a standard blood draw.

Why it is often ordered

A clinician may order this test to help investigate the cause of an underactive or overactive thyroid. It is often used to support the diagnosis of autoimmune thyroid conditions.

Preparation

Please follow any specific preparation instructions provided by the laboratory. Generally, no special preparation is needed for this test.

How results are reported

Results are typically reported within a few business days. Reference ranges, which indicate what is considered normal, vary by laboratory and should be discussed with your healthcare provider.

Before you go

Specific preparation instructions
Typical turnaround time
How results are reported

Cities

TPO Test (Thyroid Peroxidase Antibody) in California communities

Choose your city for local context and to request this test.