2 - 7 days
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Indirect Fluorescent Antibody (IFA)
<1:16 antibody not detected; 1:16 equivocal, repeat in 3-4 weeks; >1:32 antibody detected
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Tube MUST be labeled with whether specimen is acute or convalescent. Send both acute and convalescent sera (taken 10 - 14 days after the acute serum sample).
Collect specimen in red top or SST tube. Centrifuge, aliquot serum into a plastic vial, and refrigerate or freeze. Label as acute or convalescent.