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| 90545:VARICELLA ZOSTER VIRUS (VZV) ANTIBODY, IgM | |||||||||
| Alias Names: | VZV Ab IgM / Chicken Pox IgM | ||||||||
| Methodology: | Enzyme-Linked Immunosorbent Assay (ELISA) | ||||||||
| Edit Date: | 6/11/2010 | ||||||||
| Performed: | Monday-Friday | ||||||||
| Released: | 1-5 days after setup at PeaceHealth Laboratories’ reference lab. | ||||||||
| CPT Code: | 86787-90 | ||||||||
| Specimen Collection Details | |||||||||
| Collection: | One 7.5 mL serum separator tube (SST). | ||||||||
| Handling: | Allow to clot, centrifuge and separate serum from cells into a screw-cap plastic vial. Refrigerate. | ||||||||
| Stability: | 48 hours ambient, 14 days refrigerated, or 1 year frozen. | ||||||||
| Standard Volume: | 1 mL serum. | ||||||||
| Minimum Volume: | 100 µL serum. | ||||||||
| Transport: | Refrigerated. | ||||||||
| Rejection Criteria: | Severly lipemic, icteric, contaminated, heat-inactivated, or hemolyzed specimen. | ||||||||
| Evaluation of recent infection: | |||||||||||||||||||
| Varicella Zoster Virus Antibody, IgM. For additional information, refer to individual test. | |||||||||||||||||||
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≤0.90 ISR
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Negative: No significant level of detectable varicella-zoster virus IgM antibody.
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0.91-1.09 ISR
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Equivocal: Repeat testing in 10-14 days may be helpful.
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≥1.10 ISR
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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.
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| ISR=Immune Status Ratio | |||||||||||||||||||