Testing for ethanol abuse is performed by clinical laboratories and by emer
gency medicine and law enforcement personnel. Although the definitive appro
ach to determine ethanol intoxication for clinical or medicolegal purposes
is whole blood analysis by gas chromatography, most laboratories anti other
testing facilities do not have such capabilities. In the clinical laborato
ry, ethanol is measured routinely in serum or plasma by using high-volume o
r benchtop analyzers. However, point-of-care testing devices can be used to
screen other biologic fluids and breath, Many alternative devices have bee
n approved by the US Department,of Transportation and, thus have become pop
ular for; workplace testing in the private sector. Breath-alcohol analysis
is the most popular means for determining impairment in medicolegal setting
by law enforcement agencies.