The Treponema pallidum haemagglutination (TPHA) test in biological false positive and leprosy sera

AUTOR(ES)
RESUMO

The Treponema pallidum haemagglutination (TPHA) test was carried out on 274 sera known to show biological false positive reactions to reagin tests for syphilis. The Treponema pallidum immunization (TPI) and fluorescent treponemal antibody absorption (FTA-ABS) tests were non-reactive on all these sera. Thirty-one or 11·3% showed reactive results in the TPHA test.

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