Preferred Alliance oversees a team of Certified Breath Alcohol
Technicians and Proficiency Trained Collectors, serving Northern
& Southern California regions with On Site Testing.

Our team of trained collectors will come to your location and provide
convenient collections and testing for your employees. On Site testing
has proven to be a huge savings in compensable lost time for
employers. You are not paying an employee "windshield time" while
they are driving to and from a collection site for testing.

NON DOT Testing using the "iCup" for quick results is also available
on site when your testing needs require immediate results.