Vial containing 0.5 mL Borrelia burgdorferi positive IgG human control serum with protein stabilizer and 0.005% thimerosal. Stable at 2-8°C until labeled expiration date. When used undiluted, as provided, specific fluorescent intensity of 3+ or greater should be seen. Optionally, the positive control can be titered to endpoint. If titered, the control should be serially diluted in PBS. When the control has been tested for the endpoint titer by MBL-Bion, an endpoint titer is printed on the positive control vial. Due to variations within each laboratory (fluorescent microscopy, etc.) each laboratory should establish its own mean titer for each lot of positive control (generally + one dilution from stated endpoint).
MBL Bion REAGENTS FOR IFA (Indirect Fluorescent Antibody) TESTS may be used in assays for the qualitative and/or semi-quantitative determination of specific IgG or IgM antibodies in human serum. The MBL Bion REAGENTS FOR IFA TESTS are intended for use as an aid in diagnosis of certain autoimmune diseases or for primary or active infection and/or as a determination of immunological experience with specific microorganisms.