Test Directory
4284 Thyroid Peroxidase Antibodies (TPO)
Specimen Type
Specimen Stability
Reference Range
Serum-SST or EDTA Plasma-Lavender top tube
7 days 2-8° C
<60 U/mL
Specimen Requirements
Preferred amount: 1.0 mL Serum
Minimum amount: 0.5 mL Serum or
Preferred amount: Full tube of Whole Blood
Minimum amount: 0.5 mL whole blood
Minimum amount: 0.5 mL Serum or
Preferred amount: Full tube of Whole Blood
Minimum amount: 0.5 mL whole blood
Method
Chemiluminescent immunoassay
Schedule
Mon-Fri
Turn-Around Time
24hrs
Instructions/Notes
Heterophilic antibodies in human serum can react with reagent immunoglobulins, interfering with in vitro immunoassays. Patients routinely exposed to animals or to animal serum products can be prone to this interference and anomalous values may be observed.
Clinical Utility
Diagnostically used in the quantitative determination of autoantibodies against thyroid peroxidase.
CPT Codes
86376
