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Compatibility Testing Laboratory

Retrospective Compatibility Testing

  • Transaction Code: 3103-00 (ABO/Rh)
  • CPT Code (Suggested): 86900, 86901
  • Transaction Code: 3104-00 (Antibody Screen)
  • CPT Code (Suggested): 86850

If the units are transfused, a sample is required to perform a retrospective crossmatch.

  • Analytic Time: 4 hours
  • Days Test is Set Up: Monday-Sunday
  • Sample Required: > 5 years old, one full 7 ml EDTA; 1-5 years old, one full 3 ml EDTA; < 1 year old, 2 full 0.5 ml EDTA microtainers
  For questions call the
laboratory: 206-292-6525