Breath alcohol testing is one of the most common ways to perform alcohol screening. The test is performed by having the donor blow forcefully into the EBT's mouthpiece for at least 6 seconds or until the EBT indicates that an adequate amount of breath has been attained. If the result is less than 0.02, the test is considered negative. Breath alcohol tests are immediate, therefore the BAT reports to the employer in a confidential manner. This report may be in writing, in person, or by telephone or electronic means. If the result is positive, the BAT must ensure immediate reporting of the results to the employer to prevent the employee from performing a safety-sensitive function.