Tests for the detection of narcotics, psychotropics, stimulating or other analogous substances.

Article 28. Tests for the detection of narcotics, psychotropics, stimulating or other analogous substances.
1. Tests for the detection of narcotics, psychotropics, stimulating or other analogous substances will be performed according to the following paragraphs:
a) Tests will consist of medical examination of the subject and of clinical analyses that the forensic doctor or other qualified personnel of the health center or medical institute to which the subject is transferred, deems suitable. At the request of the subject or by order of the judicial authority, or if the subject refuses a first test, tests consisting of the analysis of blood, urine or other analogs will be repeated (LST Art 12,2, para 2).
b) Anyone in a similar situation to those in Article 21, with respect to the investigation of intoxication, is required to submit to the tests indicated in the previous paragraph. In the cases of refusal to carry out these tests, the traffic officer can immediately immobilize the vehicle as stated in Article 25.
c) Traffic officers noticing evident symptoms that reasonably indicate the presence in anyone of the substances alluded to in Article 27 will treat the matter in accordance with the Law of Criminal Judgment. When applicable, the judicial authorities will if possible arrange tests in the same manner as for alcoholic detection.
d) The competent authority will determine the verification programs to enforce preventive driving controls for narcotic, psychotropics, stimulating or other analogous substances.
2. Infractions of driving under the effects of narcotics, psychotropics, stimulating or other analogous substances, as well as infractions of the obligation to be tested for their detection are very serious offences (LST Art 65.5.a) and b)).