The Microscopic Agglutination Test (MAT) is the standard serological test used in the United States for diagnosis of Leptospirosis. The following six serovars are used in the assay: L. bratislava, L. canicola, L. grippotyphosa, L. hardjo-bovis, L. icterohaemorrhagiae and L. pomona. Generally, the serovar with the highest titer is the infecting serovar but cross-reactions do occur albeit at a lower level. Titers should be interpreted in the context of clinical findings, laboratory data and Leptospirosis vaccination history
Leptospirosis Titers For Large Animals Interpretation Guidelines
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