Normal Reference Ranges
Adult
Negative Index
Pediatric
Negative Index
Clinical Significance
Initial EIA screening test. If positive or equivocal, must be confirmed with a Western Blot (two-tiered testing).
Causes of High
- Lyme Disease (Borrelia burgdorferi)
- False positive (other spirochetal diseases)
Causes of Low
- Normal finding
- Too early in infection (first 2-4 weeks)