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Cerebrospinal Fluid Bacterial Antigen

No Benefit Beyond Gram Stain


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Study Methods

Slide 6

May 2010

The bacterial antigen test was performed according to the manufacturer’s instructions. A positive result was indicated by the development of clearly visible agglutination after 3 minutes of mixing. Agglutination of a single test latex without agglutination in the other tests or negative control latexes indicated the presence and identity of the bacterial antigen. Cerebrospinal fluid Gram stains performed after January 2007 utilized a cytocentrifugation step. Prior to that time, cerebrospinal fluid Gram stains had not been subjected to cytocentrifugation.

Study Methods


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