Red Cell Reference Laboratory

anti-A or anti-B Titration

• Transaction Code: 3115-00
• CPT Code (Suggested): 86886

Semiquantitative method for determining anti-A or anti-B concentration. Serial two-fold dilutions of serum are tested against A or B cells, respectively. Result is expressed as the reciprocal of the highest serum dilution at which (1+) agglutination is still present. This test is generally used to monitor therapeutic reduction of anti-A or anti-B in recipients of ABO mismatched bone marrow or liver transplants. Target hemagglutinin levels are generally in the range of less than 16 to 8.

• Sample Required: 7 ml EDTA
• Normal Test Values: Interpretation depends on clinical setting
• Analytic Time: 24 hours if weekday; 48 hours if weekend
• Days Test is Set Up: Monday through Sunday