(a) Prior to the commencement of an action for the establishment of paternity, the Bureau for Child Support enforcement may order the mother, her child and the man to submit to genetic tests to aid in proving or disproving paternity. The bureau may order the tests upon the request, supported by a sworn statement, of any person entitled to petition the court for a determination of paternity as provided in section one of this article. If the request is made by a party alleging paternity, the statement shall set forth facts establishing a reasonable possibility or requisite sexual contact between the parties. If the request is made by a party denying paternity, the statement may set forth facts establishing a reasonable possibility of the nonexistence of sexual contact between the parties or other facts supporting a denial of paternity. If genetic testing is not performed pursuant to an order of the Bureau for Child Support enforcement, the court may, on its own motion or shall upon the motion of any party, order such tests. A request or motion may be made upon ten days' written notice to the mother and alleged father without the necessity of filing a complaint. When the tests are ordered, the court or the bureau shall direct that the inherited characteristics, including, but not limited to, blood types, be determined by appropriate testing procedures at a hospital, independent medical institution or independent medical laboratory duly licensed under the laws of this state or any other state and an expert qualified as an examiner of genetic markers shall analyze, interpret and report on the results to the court or to the Bureau for Child Support enforcement. The results shall be considered as follows:
(1) Blood or tissue test results which exclude the man as the father of the child are admissible and shall be clear and convincing evidence of nonpaternity and, if a complaint has been filed, the court shall, upon considering such evidence, dismiss the action.