What Does 4AT Mean in Medical Terms?

4AT stands for 4 A's test. Rapid delirium and cognition screening tool.

4 A's test

Rapid delirium and cognition screening tool.

Where you will see 4AT

You will most often see 4AT in mental health assessments and care plans, neurology notes and assessments, observation charts and bedside assessments.

Example

A chart note might use “4AT” as shorthand for 4 A's test when documenting a patient's care.

Related abbreviations

Browse the full Medical Abbreviations guide — 5,715 entries, searchable A–Z and by specialty.

Educational reference only. This guide is for learning and quick reference. Abbreviations vary between hospitals, countries and specialties, and some are discouraged because they can be misread. Always write and interpret orders using your own institution’s approved abbreviation list, and check anything unclear with the prescriber or your local policy.