Unexpected Antibodies

This Medical Laboratory Science lesson in Blood Bank supports laboratory science learning and laboratory interpretation for medical laboratory students and professionals.

Define unexpected antibodies as non-ABO findings distinct from expected isoagglutinins, and outline the laboratory pathway from a positive screen to identification and reporting.

Intermediate26 min read15 sectionsBlood Bank
Section 1 of 150%

Learning Objectives

Getting started

Section 1 of 15

Learning Objectives

Learning Objectives

Section: Learning Objectives

Each objective below describes a competency you will apply at the immunohematology bench, practical laboratory reasoning first, memorization second.

  • Distinguish unexpected antibodies (alloantibodies or autoantibodies detected outside ABO reverse typing) from expected ABO isoagglutinins
  • Relate transfusion and pregnancy history to alloimmunization risk and the likelihood of a positive antibody screen
  • Outline the laboratory pathway from screen positivity through identification, phenotype confirmation, and reporting without inventing institutional turnaround rules