Which of the following is NOT required when defacing a voided label?

When defacing a voided label, the primary purpose is to ensure that the label is no longer usable and to maintain clear records for safety and compliance. The elements that are typically required—such as the center, date, and initials—serve to document who voided the label, when it was done, and to signify that the action was performed by a qualified individual.

The center usually refers to a specific marking or indication that shows the label has been voided, while the date provides a timestamp for the action. Initials indicate accountability and traceability to a specific person. Each of these components helps in maintaining accurate records and ensures that labels are correctly managed.

In contrast, the volume of plasma is not necessary when voiding a label. The volume information pertains to the specifics of the plasma collection and does not play a role in the voiding process. Therefore, the requirement for documenting the volume of plasma can be omitted in this context, making it the correct response to the question.