system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Colour change in pyrogallol test for air embolism is
assistant
The correct answer is  Pyrogallol test : - To detect antemoem air embolism - Gas from the hea on addition to pyrogallol solution will change from colourless to brown in presence of free oxygen