This is from a post on a Lyme discussion forum
p58 or 58 kDa (which is positive on both IGg and IGm on my result)
has a high in specificity for lyme disease, see the German guidelines p.6, but these guidelines don't explain/comment on it further, Dr D (rheumatologist) who was the rheumatologist at B/Spear told this person that the 58 is ''lyme in Europe'', but again this would not be included in the Finnish, French or UK tests used