Nev. Rev. Stat. § 125A.515
1. Unless the court issues a temporary emergency order pursuant to NRS 125A.335, upon a finding that a petitioner is entitled to immediate physical custody of the child, the court shall order that the petitioner may take immediate physical custody of the child unless the respondent establishes that:
(a) The child custody determination has not been registered and confirmed pursuant to NRS 125A.465 and that:
(Added to NRS by 2003, 1002; A 2017, 770)