25 Jul
Results from Varicella zoster IgM assay should not be used as a sole determinant of a current or recent infection. Since an IgM test can yield false positive
results and low level of IgM Antibodies may persist for more than 12 months post infection, reliance on a single test result could be misleading. If an acute infection is suspected, consider obtaining a new specimen and submit for both IgG & IgM testing in two or more weeks.