Hepatitis B Core Antibody, IgM Mnemonic _HEP B CIGM Synonym HBcAb-IgM Specific - IgM Anti-HBc Ab - Hepatitis B Core IgM Specimen Collection Requirements Collect Serum, one 5.0 mL gold (SST), 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 within 8 hour of collection. Preferred Volume 1.0 mL Serum Minimum Volume 0.25 mL Serum (0.6 mL minimum whole blood draw) Transport Refrigerated (2-8°C), if the specimen will be delayed more than 48 hours, freeze serum at ≤ -20°C Rejection Criteria Grossly hemolyzed or plasma specimens, specimens with microbial contamination Stability BEFORE SEPARATION FROM CELLS: Room Temperature (18-26°C): 8 hours; Refrigerated (2-8°C): 24 hours AFTER SEPARATION FROM CELLS: Room Temperature (18-26°C): 8 hours; Refrigerated (2-8°C): 48 hours; Frozen (≤ -20°C): 2 months Testing Information Performed Mon-Sat Reported 24-48 hours Method Chemiluminescent Immunoassay Reference Values Reference Values Non-reactive CPT Codes 86705 Last Updated: Thursday, May 9, 2019 11:57:21 AM Client Services: 503-413-1234