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
The concentration of methemoglobin to cause cyanosis-
assistant
The correct answer is  For Cyanosis to occur,
Sulfhemoglobin should be equal or more than 0.5gm/dL
Methemoglobin should be equal or more than 1.5gm/dL
Deoxygenated hemoglobin should be equal or more than 5gm/dL