Implementation of a molecular genotyping protocol for patients with warm autoantibodies.

Background: Warm autoantibodies (WAAs) cause delays and additional expenses while determining suitable products when using a traditional protocol (TP). In 2013, Carter BloodCare Immunohematology Reference Laboratory (IRL) introduced a molecular protocol (MP) for patients with WAAs.

Study Design And Methods: Retrospective review of records for samples referred to the IRL from November 2004 to September 2020, was performed.