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Test Code Billings Clinic: 5874 Elution Studies, Blood

Performing Laboratory

Billings Clinic Laboratory:  Blood Bank

Useful For

  • This test is performed to remove the antibody that has been absorbed onto red cells either in vivo or in vitro.
  • The recovered antibody, in whatever fluid that has been used to recover it, is called an eluate.
  • It is used to make an identification of specificity of the antibody responsible for serological reactions that have been encountered.
  • It is also useful in the evaluation of antibodies resulting from transfusion reactions, acquired hemolytic anemias, or hemolytic disease of the newborn.


  • MTS Gel Card
  • Tube Agglutination

Specimen Requirements

  • Specimen must arrive within 48 hours (preferably 24 hours) of draw.
  • Draw blood in a lavender-top (EDTA) tube(s), and send 5 mL of unprocessed EDTA whole blood.
  • Do not centrifuge.
  • Forward unprocessed whole blood promptly.
  • Note:  Date of delivery or abortion, diagnosis, transfusion history, medications, and date and time of draw are required on request form for processing.

Reject Due To

  • Specimen received in serum gel tube
  • Specimen received in plasma gel tube

Reference Values


Day(s) Test Set Up


Test Classification and CPT Coding

86860 - each elution