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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
All of the following are associated with coombs positive hemolytic anemia except -
assistant
The correct answer is  Coombs is positive only in immune hemolytic anemias where there is hemolysis of RBCs by antibodies produced in the body which is the case in SLE ,PAN & Scleroderma. While in TTP hemolysis occurs due to trauma to RBCs due to Microangiopathic hemolysis, seen in TTP &HUS Ref Robbins 9/e pg 448-449