23 PA Cons Stat § 5104 (2021)
2021 Pennsylvania Consolidated & Unconsolidated Statutes|Title 23 - DOMESTIC RELATIONS|Chapter 51 - General Provisions|Section 5104 - Blood tests to determine paternity

§ 5104. Blood tests to determine paternity. (a) Short title of section.--This section shall be known and may be cited as the Uniform Act on Blood Tests to Determine Paternity.  (b) Scope of section.-- (1) Civil matters.--This section shall apply to all civil matters.  (2) Criminal proceedings.--This section shall apply to all criminal proceedings subject to the following limitations and provisions:  (i) An order for the tests shall be made only upon application of a party or on the initiative of the court.  (ii) The compensation of the experts shall be paid by the party requesting the blood test or by the county, as the court shall direct.  (iii) The court may direct a verdict of acquittal upon the conclusions of all the experts under subsection (f). Otherwise, the case shall be submitted for determination upon all the evidence.  (iv) The refusal of a defendant to submit to the tests may not be used in evidence against the defendant.  (c) Authority for test.--In any matter subject to this section in which paternity, parentage or identity of a child is a relevant fact, the court, upon its own initiative or upon suggestion made by or on behalf of any person whose blood is involved, may or, upon motion of any party to the action made at a time so as not to delay the proceedings unduly, shall order the mother, child and alleged father to submit to blood tests. If any party refuses to submit to the tests, the court may resolve the question of paternity, parentage or identity of a child against the party or enforce its order if the rights of others and the interests of justice so require.  (d) Selection of experts.--The tests shall be made by experts qualified as examiners of blood types, who shall be appointed by the court. The experts shall be called by the court as witnesses to testify to their findings and shall be subject to cross-examination by the parties. Any party or person at whose suggestion the tests have been ordered may demand that other experts qualified as examiners of blood types perform independent tests under order of court, the results of which may be offered in evidence. The number and qualifications of experts shall be determined by the court.  (e) Compensation of experts.--The compensation of each expert witness appointed by the court shall be fixed at a reasonable amount. It shall be paid as the court shall order. Subject to general rules, the court may order that it be paid by the parties in such proportions and at such times as it shall prescribe or that the proportion of any party be paid by the county and that, after payment by the parties or the county, or both, all or part or none of it be taxed as costs in the action. Subject to general rules, the fee of an expert witness called by a party but not appointed by the court shall be paid by the party calling him, but shall not be taxed as costs in the action.  (f) Effect of test results.--If the court finds that the conclusions of all the experts as disclosed by the evidence based upon the tests are that the alleged father is not the father of the child, the question of paternity, parentage or identity of a child shall be resolved accordingly. If the experts disagree in their findings or conclusions, the question shall be submitted upon all the evidence.  (g) Effect on presumption of legitimacy.--The presumption of legitimacy of a child born during wedlock is overcome if the court finds that the conclusions of all the experts as disclosed by the evidence based upon the tests show that the husband is not the father of the child.