Alcohol is a factor in many categories of injury. Alcohol intoxication is frequently associated with injuries from falls, fires, drowning, overdoses, physical and sexual abusements, occupational accidents, traffic accidents and domestic violence. In many instances, for forensic purpose, it may be necessary to establish whether the patients have consumed alcohol that would have been the reason for the injury/accidents. Combining rapidity and reliability, alcohol saliva strip test (AST) has been put forward for the detection of alcohol in saliva for blood alcohol concentration (BAC).
Now a days alcohol-attributable injuries and violence are of growing concern as alcohol is a factor in many categories of injury . Each year it is responsible for about 2.3 million premature deaths worldwide. Injuries – both unintentional and intentional – account for more than a third of the burden of disease attributable to alcohol consumption. These include injuries from road traffic crashes, burns, poisoning, falls and drowning as well as violence against oneself or others. The impact of alcohol-related injuries affects not only those who are intoxicated at the time of injury occurrence, but also those who fall victim to their behavior [2,3]. Alcohol consumption has been steadily increasing in developing countries like India and decreasing in developed countries since the 1980’s . At a snapshot, the scenario of alcohol consumers in India stands at greater than 62.5 millions during 1970’s that has increased by 106.7% over the 15-year period from 1970 to 1996 and continues to increase at the same pace to the present [5-7].
People drink at an earlier age than previously. The mean age of initiation of alcohol use has decreased from 23.36 years in 1950 to 1960 to 18.45 years in 2010. Changing social norms, urbanization, increased availability, high intensity mass marketing and relaxation of overseas trade rules along with poor level of awareness related to alcohol has contributed to increased alcohol use. This alcohol use was associated with 94% of incidents of self harm, 54% of non-specific, 47% of collapses, 50% of assaults, and 50% of patients admitted to hospital [5-7]. In many instances, for investigation purpose, it may be necessary to establish whether the patients/subjects have consumed alcohol that would have been the reason for the injury/accidents.
The blood alcohol concentration (BAC) is a direct measure of the alcohol level for various purposes like forensic, work place, medical and research settings; and several new technologies have been developed for estimating the same. The most preferable method for quantitative measurement of alcohol is gas chromatography for whole blood. However it is time consuming, expensive and requires skills in laboratory techniques. To date, noninvasive methods for quantitatively estimating BAC have primarily used breath testing/breathe meters. Although a breath analyzer provides a rapid result, it requires calibration on a regular basis and patient cooperation which may be difficult in combative or comatose patients . Combining rapidity and reliability, alcohol saliva strip test (AST) has been put forward for the determination of blood alcohol concentration (BAC) by detecting alcohol in saliva which can be helpful in forensic investigations as an aid.
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