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Thyroid Peroxidase AB
Test CodeLTPOAB
Alias/See Also
TPO Antibody, Microsomal Antibody
CPT Codes
86376
Preferred Specimen
1.0 mL of whole blood (0.5 mL of serum)
Minimum Volume
0.4 mL of whole blood (0.2 mL of serum or plasma)
Transport Container
Serum Separator (gold top), No Additive Red Top, Lithium Heparin (mint top)
Transport Temperature
Refrigerated
Specimen Stability
Room Temperature: 8 hours
Refrigerated: 48 hours
Frozen: 30 days
Refrigerated: 48 hours
Frozen: 30 days
Methodology
Chemiluminescent Immunometric Assay
Setup Schedule
Monday through Saturday
Report Available
Testing received by noon will be reported by 4:30 p.m. Specimens received after noon will be reported by the next morning.
Reference Range
<35 IU/mL
Clinical Significance
TPO can be used as an aid in the diagnosis of thyroid autoimmune disorder, in differnetiating thyroid auotimmune disorders from nonautoimmune goiter or hypothyroidism, and as a diagnostic tool in treatment of patients who have subclinical hypothyroidism.
