title: Case report: mixed-field agglutination in a patient with a weak D antigen presenting as a possible fetal-maternal hemorrhage.
abstract: A gravida 1, para O, 17-year-old black female was found on prenatal testing to be group O, Du+, the latter test showing many unagglutinated cells. Because of the mixed-field appearance, the patient was thought initially to have bad a fetal-maternal hemorrhage. Additional red cell typings were performed, but no other apparent mixed-field reactions were observed. The Kleihauer- Betke test and hemoglobin electrophoresis indicated that the mixed-field agglutination was not due to a fetal-maternal hemorrhage. Thus, the finding of a mixed-field D typing could he explained best by a weak D antigen.
authors.affiliation: LifeSource, 530 E. 31st Street, Chicago, IL 60616, USA.
authors.forename: P J
authors.initials: PJ
authors.lastname: Unger
authors.forename: J
authors.initials: J
authors.lastname: Rapini
authors.forename: F
authors.initials: F
authors.lastname: DelMores
authors.forename: C
authors.initials: C
authors.lastname: Howard
authors.forename: J
authors.initials: J
authors.lastname: Znavor
authors.forename: O
authors.initials: O
authors.lastname: Behzad
authors.forename: E C
authors.initials: EC
authors.lastname: Rossi