As used in this [chapter]:

“Confirmatory test” means a drug or alcohol test that uses a method of analysis determined by the director of health to be reliable in establishing the identity and quantity of alcohol, drugs, or metabolites of drugs detected in an initial screening test.

“Department” means the department of health.

“Director” means the director of health.

“Drug” means a controlled substance as defined in chapter 329.

“Medical review officer” means an individual who has knowledge of substance abuse disorders and toxicology as determined by the department, and is appointed by the third party to receive, review, and interpret the results of laboratory tests requested by the third party. The department may specify through rules the qualifications of a medical review officer, and any additional responsibilities that may be required to carry out this chapter.

“Positive test result” means a finding through confirmatory testing of the presence of drugs, alcohol, or the metabolites of drugs in the sample tested in the levels at or above the cutoff levels established by the director.

“Substance abuse on-site screening test” means a portable substance abuse test that meets the requirements of the United States Food and Drug Administration for commercial distributionor is manufactured by a facility that is minimally certified as meeting the ISO 13485 standard established by the International Organization for Standardization and which may be used by an employer in the workplace.

“Substance abuse test” means any testing procedure designed to take and analyze body fluids or materials from the body for the purpose of measuring the amount of drugs, alcohol, or the metabolites of drugs in the sample tested.

“Third party” means any person, agency, employer or any other entity who requests substance abuse testing of another person or persons. Unless otherwise specified, the “third party” shall include the party’s designated staff.