If I am understanding it correctly, both of you are right. I think Cat's point was that the employer bears the responsibility of collecting the test and I would imagine that most carriers have some sort of contract or contracts with their drivers where the driver legally consents to scheduled drug/alcohol screenings, consents to the random drug/alcohol screenings and consents to drug/alcohol tests following an accident in which the carrier is required to perform/provide the results of the testing.
If I am understanding the story, the nurse did the right thing and the detective was uninformed. The driver could not give consent because of his condition which is an exemption and in order to obtain the test without the drivers consent or a copy of what I have to imagine is standard where the driver gives prior consent to this type of testing, law enforcement absolutely needs a warrant and I wouldn't imagine it is difficult to obtain. My assumption is that most accidents in this case, would be enough probable cause for a judge to quickly issue that warrant but maybe there have been cases where LE has had these warrants challenged in court and judges are a little more touchy about signing off on it.
I didn't see the details in the story, perhaps this driver owns his own truck and is hauling his own loads in which case he is both driver and employer and might not have a consent form signed prior to the accident. Maybe he is a contracted driver, should be easy enough to track and most reputable firms have the proper paper work and are made aware of any incident in almost real time. I personally don't have any sort of consent paper work, I am exempt from the pre-employment and current drug screening but would have no problems with consenting to a test if I were physically able to do it, maybe I should file something in that regard or keep copies in the truck to make investigators jobs a little easier.
Its part of the problem with regulations, they change so dramatically. I've heard that the sleep apnea rules are getting loosened because of the number of people who required restrictions, basically if your neck is 17" plus, you were required to have a sleep study completed (can cost over 5 grand) to rule out any sleep related issues and if you had sleep apnea, you were required to purchase the Cpap with the computer that made damn sure you wore it and sent that information to the fmcsa. I got so pissed off with the reg's that I currently don't have a valid health card, had to file a document that stated that I was farm exempt which also seems silly to me. Easy enough and probably a good policy to have the health screenings but they kept adding cost to it and when the cost outweighs the benefit and/or it starts eliminating a large portion of your available driving work force, you have to reel it in a bit.