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
- Thyroid Antibody
- TPO Antibodies, Serum
- Thyroid Peroxidase Autoantibodies
- Peroxidase Antibody
- Microsomal Antibody
- 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]
Normal Volume
0.5 mL serum
Minimum Volume
0.4 mL serum
Rejection Criteria
Heparinized (green top) plasma is NOT acceptable. [rev 3/08]
Billing
CPT Code
86376
Fee Code
37916
LOINC
8099-4
NY State Approved
No