Mich. Comp. Laws § 333.29509

Sec. 509. (1) The department's laboratory is the official regulatory testing facility for testing official hemp samples under chapter IV. (2) The department may contract with a third-party laboratory to conduct the testing of official hemp samples under chapter IV. A third-party laboratory must meet all of the following requirements: (a) Be registered with the DEA. (b) Meet the standards under chapter IV. (c) Provide copies of any certified report that states the results of a total delta-9-THC test completed under section 403 to the department within 24 hours after the total delta-9-THC test is completed.