NACB Laboratory Medicine Practice Guidelines remain in the published section of our web site, available for download and purchase, for 5 years after initial publication. This is consistent with the policy of the National Guidelines Clearinghouse which includes NACB guidelines in their repository. Five years after publication, if the guidelines have not been reviewed and updated, the documents are determined to be out of print and are archived on the NACB website.

The purpose of archiving the guidelines is to provide a historical record of NACB publications and allow access to guidelines which may have historical significance or current relevance.