Lyme Disease Antibodies

What it isAntibodies against Borrelia burgdorferi, the bacterium transmitted by ticks that causes Lyme disease.

DoesConfirms past or active Lyme infection in someone with appropriate exposure and symptoms.

GoodNegative result in someone with symptoms argues against Lyme disease as the cause.

BadPositive results in the right clinical context confirm Lyme. Two-step testing (ELISA then Western blot) is the standard approach.