Varicella Zoster Virus IgG Antibody Mnemonic VZV IGG Synonym Herpes Zoster - Herpes Zoster Antibodies - IgG Serum, Varicella-Zoster Antibody - Varicella-Zoster Antibody Screen - Varicella-zoster IgG - Varicella-Zoster Immune Status - VZ AB IgG - VZV - VZV Antibody IgG - VZV IgG Antibody Guidelines In urban populations of the United States, an estimated 95% of the adult population have antibody indicating previous exposure and immunity. Specimen Collection Requirements Collect Serum, one 5.0 mL gold (SST) or 7.0 mL red top tube Handling Allow serum to clot completely at room temperature (minimum – SST: 30 minutes, red top tubes: 60 minutes). Centrifuge and separate serum from cells ASAP. Preferred Volume 0.5 mL Serum Minimum Volume 0.25 mL Serum (0.75 mL minimum whole blood draw) Transport Refrigerated (2-8°C). Rejection Criteria Grossly hemolyzed, icteric or lipemic specimens; contaminated specimens; heat inactivated specimens; plasma. Stability AFTER SEPARATION FROM CELLS: Room temperature (18-26°C): Unacceptable; Refrigerated (2-8°C): 7 days; Frozen (≤ -10°C): 30 days (not more than 5 freeze/thaw cycles). Testing Information Performed Mon - Fri Reported 24-72 hours Method Chemiluminescent Immunoassay Reference Values Reference Values <= 134.9 Index Negative for Varicella-zoster IgG antibody. 135.0 – 164.9 Index Equivocal for Varicella-zoster IgG antibody. Repeat testing in 7-14 days may be helpful. >= 165.0 Index Positive for Varicella-zoster IgG antibody. CPT Codes 86787 Last Updated: Wednesday, January 27, 2021 03:24:30 AM Client Services: 503-413-1234