The Comprehensive Blood Bank Survey of the College of American Pathologists--1981.

Results of the 1981 Comprehensive Blood Bank Survey of the College of American Pathologists are reported and summarized in tabular form. Excellent results were achieved by the participants in ABO grouping, Rh typing, and crossmatching. Difficulties were encountered by some of the participants in detecting a very weak anti-D and a naturally occurring anti-E. Ungraded specimens were included in this survey and report as well as responses to additional questions utilized to determine current blood bank practices.