What do police test for in blood and urine tests?

Do they test for benzos?

When police caught you and they wanted to test your blood and urine, they are suspecting you are a drug user or driving under the influence of alcohol.

Depends on what you are under suspicion for

Narcotics and/or alcohol.

Generally for drugs and alcohol content.

alcohol, drugs, and sperm

to see if you take drugs? i think

Yes, they do test for Benzos. First they perform a screen test using blood or urine, then they perform confirmation on any substances initially detected in the screen test.

Usually its for drivers who might have had to many drinks (or not ) Last year I was in an accident, with a 40 ft long lorry not his fault or mine, the culprit speed of before the police came, and although I was in shock, myself, and the lorry driver had to blow into the bag to see if either of us had been drinking. If you refuse to do that they can take you to the station and get a blood or urine sample, that does the same thing and also tests for drugs, and as there are a lot of people now who use drugs, that is on there list of what to test for