I am in need of some help to determine the cause of a patient's sudden decreased plt. count. A patient presented to ER shortly after midnight with an elevated INR, relatively normal chemistries, and a normal CBC (WBC 9.9, RBC 4.0, Hgb 13.0, Plt 182). 2 units of plasma were given to the patient between 2am and 6am. When the patient's labs were rechecked at 11:00am, the platelet count had droped to 5 (rest of hemogram looked similar to original). Since this time (it has not been about 36 hours) the patients plt count has remained around 5, WBC count has dropped down to 6.6 and Hgb 11. The patient had no typical adverse reactions from the plasma transfusion, however the pathologist ordered a culture on the plasma and a transfusion reaction work-up. Does anyone have any advice on what this may be caused by?