Louisiana Revised Statutes Tit. 40, § 46.5. Change of paternal filiation; contestation and establishment of paternity

(a) For the surname of the child, enter either that of the present husband of the mother or, if both agree, her maiden name or surname or a combination of his surname and her maiden name or surname.

(b) For the name of the father and his age, race, ethnicity, residence, birthplace, and social security number, enter those of the present husband of the mother.

(c) Upon the petition of the mother of the child, a court may, for good cause shown, order the state registrar to enter, as the surname of the child, the maiden name or surname of the mother or a combination of the surname of the man whose surname should otherwise be given to the child under Subparagraph (a) of this Paragraph and the maiden name or surname of the mother, whichever she may choose, even if that man does not concur.