A screening test is an instrument designed to discover within a given population as many individuals as possible who currently have a condition or who are at risk of developing one in the future. Examples of screening instruments for alcohol-use disorders include Alcohol Use Disorders Identification Test (AUDIT), Munich Alcoholism Test (MALT), and the Cut-down, Annoyed, Guilty, Eye-opener (CAGE) test. The brief intervention is a treatment strategy in which structured therapy of short duration (typically 5-30 minutes) is offered with the aim of assisting an individual to cease or reduce the harmful use of alcohol. It is designed in particular for general practitioners and other primary health care workers. The public health impact of large numbers of primary health care workers providing these interventions systematically can be considerable.