THYROID PEROXIDASE ANTIBODY Mnemonic ATPO Synonym Anti-TPO, TPO, Thyroid Microsomal Antibody Specimen Collection Requirements Collect Serum, one 5.0 mL gold (SST) or 7.0 mL red top tube Supply Item Number - 101235 or 101192 Handling Allow serum tubes to clot completely at room temperature (minimum - SST: 30 minutes, red top tubes: 60 minutes). Centrifuge and separate serum from cells ASAP. Preferred Volume 1.0 mL Serum Minimum Volume 0.3 mL Serum (0.8 mL minimum whole blood draw) Transport Refrigerated (2-8°C) Rejection Criteria Grossly hemolyzed or plasma specimens Stability AFTER SEPARATION FROM CELLS: Room Temperature (18-26°C): 8 hours; Refrigerated (2-8°C): 48 hours; Frozen (≤ -20°C): 1 month Testing Information Performed 7 days/week Reported 24 hours Method Chemiluminescent Immunoassay Reference Values Reference Values 0.0-60.0 U/mL CPT Codes 86376 Last Updated: Thursday, January 5, 2017 03:42:28 AM