Cross-Reactivity ofNonspecific Treponemal Antibody inSerologic Tests forLymeDisease

staining methods. Although there werepositive reactions forserarepresenting eachofthese study groupsandfor20(13%)of156samples collected fromthegeneral population (premarital screening forsyphilis), titration endpoints wererelatively low (.1:256). Serumsamples from18personswhohadgingivitis orperiodontitis butnohistory ofLymeborreliosis weretested byenzyme-linked immunosorbent assayforantibodies toBorrelia burgdorferi. Ofthese, five (28%) hadimmunoglobulin M antibody andfour(22%)contained immunoglobulin G antibodies tothis spirochete. Adsorption witheither sorbent commercially prepared fromT.phagedenis biotype Reiter or withwashed, wholecells ofT.phagedenis biotype Reiter reduced cross-reactivity intheenzyme-linked immunosorbent assay forLymeborreliosis.