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Test Code LAB93310 Zika Virus IgM Antibody

Reporting Title

Zika Virus IgM Antibody


In accordance with CDC guidelines a negative serologic test rules out infection with Zika virus if drawn greater than fourteen days after symptom onset.  A positive or borderline IgM antibody Zika serology tests must be forwarded for confirmation by plaque-reduction neutralization testing (PRNT)  this is to distinguish Zika antibodies from other Flaviviruses, such as Dengue.  PRNT is performed by CDC or a CDC-designated confirmatory testing laboratory to confirm positive, borderline, or inconclusive IgM results.  Patient will be charged for this testing.

Performing Laboratory

Viracor-IBT Laboratories

Specimen Requirements

Draw blood in a gold-top serum gel tube(s). Spin down and send 2.0 mL of serum ambient temperature.

Serum from a red-top tube is also acceptable

Specimen Transport Temperature

Transport 2.0 mL of serum at ambient temperature

Reference Values


Day(s) Test Set Up


Test Classification and CPT Coding