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Test ID: FBBAB
Borrelia burgdorferi Antibody Index for CNS Infection

Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.

B. Burgdorferi Antibody Index:

        < or = 1.0  Negative

        1.1 - 1.2     Equivocal

        > or = 1.3  Positive

      

Control Antibody Index: < or = 1.0

      

Albumin Ratio:  <0.0078

      

The B. burgdorferi Antibody Index is used as an aid for the

diagnosis of neuroborreliosis. An increased B. burgdorferi

Antibody Index (>1.2), accompanied by a Control Antibody

Index of less than 1.0 and an Albumin Ratio of less than

0.0078, is strong evidence for intrathecal synthesis of

organism-specific antibody, and thus CNS involvement by

B. burgdorferi. Elevation of either the control antibody

index, the Albumin Ratio, or both may indicate leakage of

antibody across the blood-brain barrier which may falsely

elevate the B. Burgdorferi Antibody Index.

 

Test Performed by: Focus Diagnostics, Inc.

                             5785 Corporate Avenue

                             Cypress, CA 90630-4750