01
Read the IgG blot for 10 bands: 18, 23, 28, 30, 39, 41, 45, 58, 66, and 93 kDa.
02
Five or more bands constitutes a positive IgG result.
03
IgG is the appropriate readout once symptoms have persisted beyond 30 days.
04
IgG seropositivity often persists for years after successful treatment — not a marker of active infection.
05
Use IgG positivity in conjunction with clinical signs (arthritis, neuropathy, carditis).