Indiana Code Title 31. Family Law and Juvenile Law § 31-14-7-2

Sec. 2. (a) If there is not a presumed biological father under section 1 of this chapter, there is a rebuttable presumption that a man is the child's biological father if, with the consent of the child's mother, the man:

(b) The circumstances under this section do not establish the man's paternity.  A man's paternity may only be established as described in IC 31-14-2-1.