RT Journal Article SR Electronic T1 Discrepant toxoplasma latex agglutination test results. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 200 OP 203 DO 10.1136/jcp.42.2.200 VO 42 IS 2 A1 R E Holliman A1 J Johnson A1 K Duffy A1 L New YR 1989 UL http://jcp.bmj.com/content/42/2/200.abstract AB The analysis of 4450 toxoplasma serology results showed that 59 (1.3%) latex agglutination reactions were not confirmed in the dye test. These discrepant results were associated with an unspecified IgM antibody but not associated with kit batch variation, inactivation of sera, concurrent cytomegalovirus infection, or the presence of hepatitis B virus "e" antigen. The latex agglutination test is useful as a screen for toxoplasma infection but false positive reactions do occur. Patients at risk of severe toxoplasmosis should be investigated by additional tests.