What is this test?
This serology test measures IgG antibodies to Borrelia burgdorferi. It is interpreted within a validated two-step algorithm, not as stand-alone proof of Lyme disease.
Why might it be ordered?
- For compatible symptoms and a realistic possibility of tick exposure, when clinically indicated.
- As the initial part of a validated two-step serology algorithm.
- Not to check whether treatment has cleared antibodies, because they may remain for a long time.
What sample is needed?
A blood specimen is used. Report when symptoms began and possible exposure occurred, because timing determines which antibody classes and steps are appropriate.
How should you prepare?
Special dietary preparation is usually unnecessary. Report antibiotics and previous Lyme results without changing treatment on your own.
How should you understand the result?
The result reports IgG. IgG may reflect recent or past infection and remain reactive for months or years; it does not show by itself whether infection is active or cured.
Sources and editorial status
This patient-facing text is an editorial draft. It should be approved by a laboratory physician before official publication.