Mich. Comp. Laws § 722.714c

Sec. 4c. The parentage of either of the following must not be determined under this act: (a) A child conceived through the use of assisted reproduction that does not involve surrogacy if the parents of the child may be determined under the assisted reproduction and surrogacy parentage act. (b) A child conceived under a surrogacy agreement that complies with the assisted reproduction and surrogacy parentage act.