Granulocyte Ab

• CPT Code: 86021
• LOINC: 35279-9
• Specimen Type: Red nongel tube
• Frequency: Setup: Mon, Wed, Fri; analytic time 7 days.
• Instructions: 1.5mL serum from red nongel tube, ambient. Min 0.5mL. Only pretransfusion reaction specimen is acceptable.
• Text: Useful For: work-up of individuals having febrile, nonhemolytic transfusion reactions; detection of individuals with autoimmune neutropenia. A positive result in an individual being worked up for a febrile transfusion reaction indicates the need for leukocyte-poor RBCs.
• Methodology: Indirect Immunofluorescence