Wis. Admin. Code § Game 14.16
If a laboratory report has been issued, whatever remains of that particular test sample shall be retained until all legal proceedings have been concluded, and all test results shall be retained for a period of one year. All samples shall be retained by the laboratory until the division approves their disposal.
History: Cr. Register, March, 1990, No. 411, eff. 4-1-90.