Biochemical Testing In The Lab 🧪⚗️🧫 Students📚 This is an OXIDASE Test, an important biochemical test used to differentiate Enterobacteriaceae, Neisseria, Moraxella, and Pasteurella! Thisbtest determinesbwhether the organism has cytochrome C Oxidase! You take a Q-tip and dip it into a colony. You crack open the oxidase dropper or reagent bottle and then drip one drop onto the organism. The color change indicated positivity. Purple means positive for oxidase. Join my community on Skool. Subscri