[Evaluation of the counterimmunoelectrophoresis technique for the serologic diagnosis of leptospirosis]. / Evaluación de la técnica de contrainmunoelectroforesis para el diagnóstico serológico de la leptospirosis.

The counterimmunoelectrophoresis (CIE) technic was assessed for leptospirosis serological diagnosis by using an antigenic preparation from Leptospira biflexa Patoc I strain. It was showed that the CIE technic had 82% sensitivity and 100% specificity. The antigen used showed a gender-specific reactivity on detecting antibodies in patients infected by different leptospirosis serogroups by microagglutination test. Antigen stability for CIE technic was 6 months without loss of titre.