What is the test for a de novo standard of review in a personal injury case?

and ends with a determination as to whether there is any substantial evidence, contradicted or uncontradicted," to support the trial court's findings. [Citation.] We review the trial court's conclusions of law under a de novo standard." ( Wilkison v. Wiederkehr (2002) 101 Cal.App.4th 822, 827, 124 Cal.Rptr.2d 631.)