Do we still need to keep our registration if we are not using our W0000 number at all?

From ICCBBA website

Transfusion and Laboratory Services:

These are facilities that do not collect or recover products, but only store and distribute blood, cell, and/or tissue products. Use is defined as application of ISBT 128 labels. This encompasses facilities that modify, pool, or aliquot products and label these products with ISBT 128 data structures.

A facility may also wish to register and pay licensing fees in order to receive all ISBT 128 databases, documents, and updates and have access to password restricted areas of the ICCBBA website where such information is maintained.

The license fee for transfusion services is maintained as low as possible to encourage such facilities to maintain regular contact with ICCBBA and remain fully informed about updates and changes to the ISBT 128 standard.