A majority of the Fortune 500 Companies implement some practice of workplace drug testing in their company policies. This practice was first initiated by President Ronald Reagan when he ordered federal agencies to drug test federal employees involved in sensitive positions as well as positions involving public safety.

As a practicing toxicologist, Dr. Amitava Dasgupta is involved with the pre-employment drug testing at his own hospital and aptly shares his expertise in Beating Drug Tests and Defending Positive Results: A Toxicologist s Perspective, which covers all major issues...