<prompt> Direct coombs test positive is seen in all except?ABO incompatibilityHemolytic ds of newbornAplastic anemiaAutoimmune hemolysis  <response>: Ans. c Aplastic anemiaRef: Wintrobe 13th edPage 576Coombs test is positive in Immune hemolytic anemiaThey can be of 2 types:Direct Coombs test- Detects Antibody on RBC SurfaceQIndirect Coombs test- Detects Antibody in SerumOut of the given options: Aplastic anemia is not a hemolytic anemia and so is automatically the answer here. 