VARICELLA-ZOSTER VIRUS ANTIBODIES, IGG & IGM
Specimen Collection Requirements
Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to a Standard Transport Tube. Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as "acute" or "convalescent."
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Varicella-Zoster Virus Antibody, IgG
Varicella-Zoster Virus Antibody, IgM
0.89 IV or less: Negative - No significant level of detectable varicella-zoster IgG antibody.
0.90-1.09 IV: Equivocal - Repeat testing in 10-14 days may be helpful.
1.10 IV or greater: Positive - IgG antibody to varicella-zoster detected, which may indicate a current or past varicella-zoster infection. Positive IgG antibody levels in the absence of current clinical symptoms may indicate immunity (98% correlation with IFA).
0.90 ISR or less: Negative - No significant level of detectable varicella-zoster virus IgM antibody.
0.91-1.09 ISR: Equivocal - Repeat testing in 10-14 days may be helpful.
1.10 ISR or greater: Positive - Significant level of detectable varicella-zoster virus IgM antibody. Indicative of current or recent infection. However, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection or immunization
86787 VZ IgG; 86787 VZ IgM
Thursday, January 5, 2017 03:42:33 AM