Drug Test Timeline

The U.S. Congress overwhelmingly approves legislation encouraging states to drug test all teenage driver’s license applicants

January 30, 1998

It is estimated that the United States spends $1 billion annually to drug test about 20 million federal workers

January 30, 1998

The Drug-Free Workplace Act of 1998

January 30, 1996

The Drug Free Workplace Act

January 30, 1996

Psychemedics introduces a personal hair testing service for parents

January 30, 1995