Test Overview
Test Methodology

Chemiluminescent Immunoassay

Test Usage

Autoantibodies to thyroid peroxidase (TPO), which is the major antigen of thyroid microsomes, can be detected in the serum of patients with autoimmune thyroid disease (e.g., Hashimoto, Graves) and predict elevated serum TSH concentrations.

Reference Range *

< 30 U/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday, Thursday
Analytic Time

8 hours

Soft Order Code
ATPO
MiChart Code
Thyroid Peroxidase IgG Ab
Synonyms
  • MICRSOM AB
  • Thyroid Antibody
  • TPO Antibodies, Serum
  • Thyroid Peroxidase Autoantibodies
  • Peroxidase Antibody
  • THYROID MICROSOMAL AB
  • Microsomal Antibody
  • THYPER
  • Thyroperoxidase Ab, Serum
  • Thyroid Peroxidase Antibodies
  • ATPO
  • Thyroperoxidase Antibodies
Laboratory
Chemical Pathology
Section
Special Chemistry
Specimen Requirements
Collection Instructions

Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and freeze.

Alternate Specimen
EDTA (lavender top) plasma is acceptable. [rev 3/08] Refrigerated specimens are acceptable. [2/05]
Rejection Criteria
Heparinized (green top) plasma is NOT acceptable. [rev 3/08]
Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.4 mL serum
Billing
CPT Code
86376
Fee Code
37916
LOINC
8099-4
Resources