How have courts interpreted section 893 of the California Code of Civil Procedure when requiring additional blood tests?

11 While we are only taking the next logical step after County of Fresno v. Superior Court (1979) 92 Cal.App.3d 133, 154 Cal.Rptr. 660, in requiring trial courts to order additional blood tests requested by a party, we do not base that requirement on section 893 as the appellate court did in County of Fresno. Rather, we rely on the provisions of section 892. Although we agree with the result reached in County of Fresno, we question that court's reliance on section 893 in making the order of HLA test mandatory by the trial court upon request of a party.