Originally Posted by Heathrow Harry
"I think that something as serious as correctly performing a drug/alcohol test and/or preventing a person from proceeding to their aircraft (whether guilty of something or not), should only be done by fully trained officers of the law.
The Eastern European approach to this might have some merit. Flight crews used to have to see a physician before starting their duties (it may even still be that way in some countries). IŽd think that a trained medical professional is even more suitable to take care of such tests and possibly even more able to spot small tell-tale signs of the various intoxications than a law enforcement official.