No appointment is necessary, nor is it necessary to fast. It is a matter of making a spontaneous urination in a sterile container in the laboratory itself or cutting a hair sample on site. The sampling of these tests will always be done in the laboratory, samples in which the origin is unknown will not be admitted.
The results are given after 24 hours in the case of urine analysis or after 15-20 days in the case of hair.
The use of these tests is becoming more and more frequent, both in family environments (parents with suspicions of consumption by their children), as well as in companies, which require regular checks of their employees to access certain jobs with functions incompatible with the consumption of addictive substances.