Fastest performance of Gram stain (start-to-finish)[1]

Greatest number of bacterial species in a blood culture[2]

Greatest number of relapses of C. difficile colitis[3]

Greatest number of distinct episodes of bacteremia

        or fungemia in an individual[4]

Highest serum anti-E. histolytica antibody titer[4]

Highest serum anti-ehrlichial antiboby titer, IgG[5]

Highest serum anti-ehrlichial antiboby titer, IgM[5]

Highest serum coccidioidal complement fixation titer[6]

Highest cerebrospinal fluid cryptococcal antigen

        latex agglutination titer[7]

Highest serum anti-streptolysin O (ASO) titer[8]

Longest duration of symptoms

        due to actinobacillus endocarditis[9]

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