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DictionarySeetestTreponema pallidum immobilization test
Treponema [trep″o-ne´mah] a genus of gram-negative, motile bacteria, spirochetes found in the oral, intestinal, and genital mucosa. Pathogenic species include T. cara´teum, the etiologic agent of pinta" >pinta; T. pal´lidum subsp. pal´lidum, the etiologic agent of syphilis" >syphilis; and T. pal´lidum subsp. perte´nue, the etiologic agent of yaws.Treponema pallidum complement fixation test (Treponema pallidum hemagglutinin test) (Treponema pallidum immobilization test) formerly common serological tests for the diagnosis of syphilis" >syphilis, related directly to the causative organism.Trep·o·ne·ma pal·li·dum im·mo·bi·li·za·tion test , TPH testa test for syphilis in which an antibody other than Wassermann antibody is present in the serum of a syphilitic patient, which in the presence of complement causes the immobilization of actively motile T. pallidum obtained from testes of a rabbit infected with syphilis. Synonym(s): TPI test, Treponema pallidum immobilization reactionTreponema pallidum immobilization test TPI test A test once the 'gold standard' for the serologic diagnosis of syphilis. Cf Rapid plasma reagin test, VDRL. LegalSeeTestSee TPIT See TPITThesaurusSeetreponema |