Research in the urine signs of cocaine intoxication.
Can be detected in urine, 4 to 6 days after the last dose, the excretion of cocaine derivative, namely benzoyl ecgonine.
Collecting at least 10 ml of urine in a container identical those used for urinalysis.
Conservation days cool and protected from light.
Given within 48 hours or 24 hours, they are positive or negative.
If false positives can rarely exist, there are often false negative, due to a manipulation of urine not from the supposed drug addict. The ideal is to ask for a sample in the laboratory, in the presence of a biologist.