Laboratory Quality Control Practice Test

The '+ attributes' of ALCOA+ data integrity are Complete, Consistent, Enduring, and Available. These four expand the original ALCOA concepts to cover the data lifecycle more fully.

Complete means all data and the necessary metadata are present, with no missing pieces that would prevent interpretation, validation, or replication. Consistent means information is recorded in a uniform way across time and systems—same formats, units, and definitions so data can be reliably compared and tracked. Enduring emphasizes long-term preservation: data should remain intact and accessible through its required retention period, resistant to degradation or unauthorized changes. Available ensures that data can be retrieved by authorized users when needed, supporting timely access for audits, investigations, or decision-making.

The other options either repeat the original ALCOA elements or mix in terms not part of the standard ALCOA+ set (for example, terms like Archived, Authorized, Accessible as a loose match, or Local and Current), which do not define the accepted '+ attributes' this concept uses.