Serum samples are tested for IgG antibody to Babesia microti by indirect immunofluorescence (IFA) and IgM and IgG antibody to native B. microti proteins by immunoblots. If the acute specimen is negative (i.e. antibodies undetectable) and the clinical history strongly suggests infection, collect a convalescent specimen 3-4 weeks later.
Specimen Requirements for Babesia microti:
Type: Serum or EDTA Plasma
Volume: 2.0 ml
Minimum: 0.5 ml
Storage: Refrigerate at 2-8°C
Stability: 2 Weeks Refrigerated or Frozen at -20°C
Turnaround Time: Routinely 24 to 48 Hours From Receipt