Post-Accident tests must be conducted as soon as practicable: Alcohol tests within 2 hours (not more than 8), and drug tests within 32 hours. If an alcohol test is not administered within two hours, the employer must document the reasons why a test was not promptly conducted. The employer must also continue to attempt to administer a Post-Accident alcohol test for up to eight hours and the Post-Accident controlled substances test for up to 32 hours after a qualifying accident. Employers must also document the failure to conduct a Post-Accident test on their MIS report.