1. Any questioning of the officer shall take place at a reasonable time and place as designated by the investigating officer, preferably when the officer under investigation is on duty and at the office of the command of the investigating officer or at the office of the local precinct or police unit of the officer being investigated, unless matters being investigated are of such a nature that immediate action is required.

2. Prior to the officer being questioned, he shall be informed of (i) the name and rank of the investigating officer and of any individual to be present during the questioning and (ii) the nature of the investigation.

3. When a blood or urine specimen is taken from a law-enforcement officer for the purpose of determining whether the officer has used drugs or alcohol, the specimen shall be divided and placed into two separate containers. One specimen shall be tested while the other is held in a proper manner to preserve the specimen by the facility collecting or testing the specimen. Should the first specimen test positive, the law-enforcement officer shall have the right to require the second specimen be sent to a laboratory of his choice for independent testing in accordance generally with the procedures set forth in §§ 18.2-268.1 through 18.2-268.12. The officer shall notify the chief of his agency in writing of his request within 10 days of being notified of positive specimen results. The laboratory chosen by the officer shall be accredited or certified by one or more of the following bodies: the American Society of Crime Laboratory Directors/Laboratory Accreditation Board (ASCLD/LAB), the College of American Pathologists (CAP), the United States Department of Health and Human Services Substance Abuse and Mental Health Services Administration (SAMHSA), or the American Board of Forensic Toxicology (ABFT).