**9. Diagnosis of transfusion haemolytic reactions**

If a haemolytic transfusion reaction is suspected, medical personnel should immediately stop transfusing a blood component. The blood unit should be checked at the patient's bedside, whether it was properly administered. Often, the clinical manifestations of haemolytic reactions are not clear, and the cause of the complication should be differentiated with bacterial infection. Therefore, prior to conducting laboratory tests of donor blood, bacteriological examination of the component remaining after the transfusion cessation should be conducted.
