Differentiation of gonococcal and non-gonococcal neisseriae by the superoxol test.

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Abstract
The superoxol (catalase) test was evaluated as a means of differentiating gonococci from related species of organisms which were cultured from a variety of anatomical sites [human]. An isolate was almost certainly not a gonococcus if it gave a negative superoxol test result; all but 1 of 596 available gonococci gave positive test results. A proportion of the non-gonococcal neisseriae and isolates of Branhamella catarrhalis also gave positive test results. The superoxol test is thus a useful addition to the techniques available for the characterization of gonococci; additional procedures are needed to confirm the identities of isolates giving positive results.