The Case: A 72-year-old man with chronic lymphocytic leukemia presents to the emergency department with a 3-month history of shortness of breath on exertion, lethargy, pallor and scleral icterus.

OBJECTIVE: First, to determine the sensitivity, specificity, and positive predictive value (PPV) of the direct antiglobulin test (DAT) for significant hemolysis in the neonate, as referenced to ...

THE risk of isoimmunization after blood transfusion depends on the relative frequency of blood-group factors, their antigenicity and the number and timing of exposures (transfusions). There have been ...