Use of the rapid diazonium blue B test to differentiate clinically important species of<i>Trichosporon</i>and<i>Geotrichum</i>

Abstract

Trichosporon isolates form pink to violet pigments following reaction with diazonium blue B which reliably differentiates them from Geotrichum species. The inoculum could be grown in static culture without diminishing the colour intensity. This modification facilitates use of the diazonium blue B reaction in clinical laboratories.