Every person who shall be placed on probation for a violation of any section in this chapter prohibiting the unlawful sale, distribution, manufacture, delivery or possession with intent to manufacture, sell, distribute or deliver any controlled substance as classified in schedule I or II or possession of a controlled substance as classified in schedule I or II shall, as a condition of the probation, be required to at his or her own expense submit to drug testing in accordance with the standards and procedures of the department of health not less than once per month.
R.I. Gen. Laws § 21-28-4.21