AABB Accreditation Announces Update to Advance Notification for Assessments

June 18, 2025

The Centers for Medicare and Medicaid Services (CMS) Clinical Laboratory Improvement Amendments (CLIA) regulations allow a two-week advance assessment performance notification.

To better support our community, AABB is modifying its assessment notification process.

Effective immediately AABB will:

  • Provide notification up to 14 days prior to scheduled assessments for all facilities in the United States.
  • Continue to announce assessments for facilities within the U.S. seeking AABB accreditation for the first time, as well as for all facilities outside of the U.S. Both facility types are exempt from the newly announced procedural change.

AABB will continue to perform unannounced, non-routine assessments based on complaint risk assessments or reassessments related to non-conformance issues.

Those with questions or concerns may contact AABB’s Accreditation Department at 1.301.215.6492 or accreditation@aabb.org