Hawaii Revised Statutes Division 3. Property; Family § 584A-503

(a) An action under this chapter shall be a civil action governed by the Hawaii family court rules or the Hawaii rules of civil procedure.  The individual who gave birth to the child and the individual whose parentage is to be adjudicated shall be competent to testify and may be compelled to testify;  provided that no criminal prosecution, other than a prosecution for perjury, shall afterwards be commenced against the individual who gave birth to the child or the individual whose parentage is to be adjudicated on account of any transaction, matter, or thing concerning which they may testify or produce evidence under this chapter, documentary or otherwise.  Part VII shall apply in any action brought under this chapter.

(b) Testimony relating to sexual access to the individual who gave birth to the child by an unidentified person at any time or by an identified person at a time other than the probable time of conception of the child shall be inadmissible in evidence, unless offered by the individual who gave birth to the child.

(c) Notwithstanding the limitation on the admission of evidence stated in subsection (b), evidence offered with respect to an individual who is not subject to the jurisdiction of the court concerning sexual intercourse or assisted reproduction with the individual who gave birth to the child at or about the probable time of conception of the child shall be admissible in evidence only if the individual offering the evidence has undergone and made available to the court genetic tests, including genetic tests the results of which do not exclude the possibility of the individual's parentage of the child.