Michigan Compiled Laws, Chapter 333. Health § 333.29401

Sec. 401. (1) A grower that intends to harvest an industrial hemp lot shall contact the department not more than 30 days or less than 20 days before the grower's anticipated harvest to collect an official hemp sample of each lot of industrial hemp grown.A designated sampling agent shall collect an official hemp sample before the grower's anticipated harvest, and the grower or the grower's authorized representative must be present.

(2) When a designated sampling agent collects an official hemp sample, the grower shall provide the designated sampling agent with complete and unrestricted access to both of the following during normal business hours:

(3) The department shall transport or cause to be transported an official hemp sample collected under this section to a regulatory testing facility for total delta-9-THC testing under section 403.  2

(4) A grower that requests the collection of an official hemp sample under this section must be in good standing. An official hemp sample will not be collected until any outstanding fee or fine under this act is paid.

(5) A grower may collect an unofficial hemp sample and submit the unofficial hemp sample to a compliance monitoring testing facility for compliance monitoring at any time to determine whether the industrial hemp is in compliance with this act.

(6) The department may use performance-based sampling that allows for reduced or no regulatory sampling of specific certified seed, varieties yielding consistently compliant hemp, lots used for academic research by a college or university, historical performance of the grower, or other factors, which have the potential to ensure at a confidence level of 95% that no more than 1% of the plants in each lot would be noncompliant.