Implementation Guide - US guidance on printing text associated with red cell antigens v1.1.0

This document provides guidance for printing text and coding red blood cell antigen test results on the affixed blood label. It gives a recommended hierarchy to order the test results on the label, and also recommends font styles to differentiate between upper-case and lower-case letters (when the difference between the 2 is based only on size). This guidance document applies to US facilities but can be used in other countries.

Main sections:

- Background

- Order of antigens

- Antigen text font size and superscripts

- Test results to print

- User of separators

- Use of reverse printing

- Label text examples

- Electronically-Readable Red Cell Antigen Test Results

- Appendix A - List of antigen names, alternative names and ISBT codes