LOCS Message Level Types

CDC’s Laboratory Outreach Communication System provides recipients with three types of messages: alerts, advisories, and updates. See the LOCS message types below to learn more information.

Lab Alert

Provides vital, time-sensitive information for a specific incident or situation; warrants immediate action or attention by health officials, laboratory professionals, clinicians, and members of the public; and conveys the highest level of importance.

Lab Advisory

Provides important information for a specific incident or situation; contains recommendations or actionable items to be performed by public health officials, laboratory professionals, and/or clinicians; may not require immediate action.

Lab Update/Resource

Provides updated information regarding an incident or situation, or provides non-incident information such as laboratory-related resources and partner news; unlikely to require immediate action.

Page last reviewed: April 17, 2019