Granulocyte Antibodies, Serum
The work-up of individuals having febrile, nonhemolytic transfusion reactions
The detection of individuals with autoimmune neutropenia
Clinical Information Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test
Granulocyte antibodies are induced by pregnancy or prior transfusion and are associated with febrile, nonhemolytic transfusion reactions. Patients who have been immunized by previous transfusions, pregnancies, or allografts frequently experience febrile, nonhemolytic transfusion reactions which must be distinguished from hemolysis before further transfusions can be safely administered. Granulocyte antibodies may also be present in autoimmune neutropenia.
Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.
A positive result in an individual being worked up for a febrile transfusion reaction indicates the need for leukocyte-poor (filtered) red blood cells.
This test cannot distinguish between allo- and autoantibodies
Cautions Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances
Not useful for diagnosis of neutropenia caused by marrow suppression by drugs or tumors
Clinical Reference Provides recommendations for further in-depth reading of a clinical nature
Verheugt FW, von dem Borne AE, Decary F, Engelfreit CP: The detection of granulocyte alloantibodies with an indirect immunofluorescence test. Br J Haematol 1997;36:533-534