Theory & Practices of Clinical Laboratory
Introduction The germ tube test for yeast identification is perhaps the most fundamental and simplest to perform. The germ tube test is one of the quickest methods for presumptive identification of Candida albicans and Candida dubliniensis. The yeasts isolated from clinical specimens are around 75% C. albicans, and germ tube …
PRINCIPLE Bacteria that produce the enzyme catalase break down hydrogen peroxide into water and gaseous oxygen, allowing gas bubbles to escape. Most bacteria can be identified using this test. REAGENTS AND SUPPLIES A. Hydrogen peroxide reagent 30% For NeisseriaCaution is needed since 30% H2O2 is very corrosive to the skin. …