Agglutination titres
Serum agglutination for antibodies are the commonest method of diagnosing brucellosis. Titres are regarded as:
- diagnostic if:
- greater than 1:160 in non-epidemic areas
- 1:640 in endemic areas
- indicative if
- 1:40 in non-endemic zones
Cross reactivity with other antibodies occurs. Complement fixation tests, ELISA and immunoradiometric assay may be needed to confirm diagnosis.
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