Session staff must ensure that a set of labels with a unique number is assigned to each donation and that the same unique number appears on the donor session record, the primary and secondary collection packs and all the sample tubes used. Great caution is necessary to avoid crossover or duplication of numbers. The working practice should be designed to minimise the risk of error. Arrangements should be such as to avoid the possibility of errors in the labelling of blood containers and blood samples. The blood or component bags and corresponding samples must not be removed from the donor couch until a satisfactory check on correct labelling has been carried out. It is recommended that each donor couch has its own individual facilities for the handling of samples during donation and labelling.
Packs, sample tubes and the donor session record must never be relabelled. Unused sets of numbers must be accounted for. Labels which have been discarded must not be retrieved.