Can workplace drug & alcohol testing result in a court case?

If you use the results of a drug/alcohol test for the purpose of imposing a penalty on an individual, then all aspects of the testing procedure i.e. the collection, the training of collection personnel, initial testing, laboratory testing and chain of custody as well as your policy and education processes may be subject to close scrutiny in a court of law. At this point, you have entered the forensic arena.

Could you trust a motor mechanic to conduct surgery on you?

No? So would you and your organization entrust persons who may be inappropriately qualified, inexperienced and lacking requisite forensic backgrounds to implement and maintain your drug and alcohol policy and procedures? Does it make sense when failure could lead to a very expensive and indefensible court case?

Is there a comprehensive solution for workplace drug & alcohol testing?

YES