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Test Directory » West Nile Virus Antibodies, IgG and IgM, Serum
West Nile Virus Antibodies, IgG and IgM, Serum
WNILES
Method(s) |
Enzyme Linked Immunosorbent Assay |
Collect |
One 5 mL gold (SST) top tube. |
Transport |
1 mL serum at 2-8ºC. |
Stability |
After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) |
Unacceptable Conditions |
Plasma. Hemolyzed, severly lipemic, heat-inactivated, or contaminated samples. |
|
Schedule |
Tue, Fri |
Billing Code |
5010436 |
CPTCode |
86789, 86788 |
Notes |
Separate serum from cells ASAP. Acute and convalescent samples must be labeled as such; parallel testing is preferred and convalescent samples MUST be received within 30 days from receipt of acute samples. Please mark sample plainly as "ACUTE" or "CONVALESCENT". |
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Component | Reference Interval | West Nile Virus Antibody, IgG by ELISA, Serum | Less than 1.29 IV: Negative - No significant level of West Nile virus IgG antibody detected. | | 1.30-1.49 IV: Equivocal - Questionable presence of West Nile virus IgG antibody detected. Repeat testing in 10-14 days may be helpful. | | 1.50 IV or greater: Positive - Presence of IgG antibody to West Nile virus detected, suggestive of current or past infection. | West Nile Virus Antibody, IgM by ELISA, Serum | Less than 0.89 IV: Negative - No significant level of West Nile virus IgM antibody detected. | | 0.90-1.10 IV: Equivocal - Questionable presence of West Nile virus IgM antibody detected. Repeat testing in 10-14 days may be helpful. | | Greater than 1.11 IV: Positive - Presence of IgM antibody to West Nile virus detected, suggestive of current or recent infection. |
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