The Microgen GN-ID system comprises two separate microwell test strips GN A and GN B). Each
microwell test strip contains 12 standardised biochemical substrates which have been selected on the
basis of extensive computer analysis (1) of published databases for the identification of the family
Enterobacteriaceae and commonly encountered non-fastidious oxidase positive and negative gram
negative bacilli (2,3,4,5). The