86060

Antibody identification; leukocyte antibodies, each panel of 10 antigens

This laboratory procedure involves the detection and specific identification of antibodies directed against leukocyte (white blood cell) antigens. The test is performed using a panel comprising 10 distinct, characterized leukocyte antigens to determine the precise specificity of any circulating anti-leukocyte antibodies in the patient's serum or plasma. Methodologies often include techniques such as lymphocytotoxicity assays, flow cytometry, or solid-phase assays. This service is crucial for investigating various immune-mediated conditions and transfusion complications.

Clinical Indications

  • Investigation of febrile non-hemolytic transfusion reactions (FNHTR) where anti-leukocyte antibodies are suspected.
  • Evaluation of refractoriness to platelet transfusions, often due to human leukocyte antigen (HLA) or human neutrophil antigen (HNA) antibodies.
  • Diagnosis and monitoring of autoimmune neutropenia or other autoimmune cytopenias affecting white blood cells.
  • Workup for suspected transfusion-related acute lung injury (TRALI) in the recipient or screening of donors.
  • Investigation of neonatal alloimmune neutropenia, where maternal antibodies attack fetal/neonatal neutrophils.
  • Pre-transfusion compatibility testing, especially for granulocyte transfusions.
  • Post-bone marrow or stem cell transplant monitoring for the development of anti-leukocyte antibodies that may impact engraftment or cause complications.

Procedure Steps

  1. Obtain a patient blood sample (typically serum or plasma).
  2. Prepare a panel of 10 different, well-characterized leukocyte antigens (e.g., from donor cells or cell lines).
  3. Incubate the patient's serum/plasma with the leukocyte antigen panel.
  4. Allow time for any anti-leukocyte antibodies in the patient's sample to bind to their specific antigens on the panel cells.
  5. Wash the reaction mixture to remove unbound antibodies.
  6. Apply a secondary detection reagent (e.g., anti-human globulin with a label) to visualize antibody binding.
  7. Analyze the results using appropriate methods (e.g., microscopy for cytotoxicity, flow cytometry, or spectrophotometry).
  8. Identify the specific anti-leukocyte antibody (or antibodies) present based on the reaction pattern.
  9. Generate a comprehensive report detailing the identified antibody specificities and their characteristics.

Coding Guidelines

  • Code 86060 is reported for each panel of 10 antigens used for antibody identification. If a larger panel is used (e.g., 20 antigens), two units of 86060 would typically be reported.
  • This code specifically applies to *identification* of leukocyte antibodies, not just screening for their presence without specific identification.
  • Accurate documentation must specify the number of antigens in the panel and the identification methodology employed.
  • This is a laboratory service and does not have a global period.
  • Modifiers 26 (professional component) and TC (technical component) may be appended if the service components are billed separately.

Associated ICD-10 Codes