Section 7555 - Determination of genetic parentage(a) Subject to a challenge under subdivision (b), a person is identified under this part as a genetic parent of a child if genetic testing complies with this part and the results of the testing disclose both of the following: (1) The person has at least a 99 percent probability of parentage, using a prior probability of 0.50, as calculated by using the combined relationship index obtained in the testing.(2) A combined relationship index of at least 100 to 1.(b) A person identified pursuant to subdivision (a) as a genetic parent of the child may challenge the genetic testing results only by other genetic testing satisfying the requirements of this chapter that either excludes the person as a genetic parent of the child or identifies another person as a possible genetic parent of the child other than the woman who gave birth to the child or the person challenging parentage.(c) If more than one person, other than the woman who gave birth to the child, is identified by genetic testing as a possible genetic parent of the child, the court shall order each person to submit to further genetic testing to identify a genetic parent.Added by Stats 2018 ch 876 (AB 2684),s 19, eff. 1/1/2019.