What is the federal statute of limitations for a personal injury action?

Federal law determines when a claim accrues, and under federal law, a claim accrues "when the plaintiff knows or has reason to know of the injury which is the basis of the action." Lukovsky v. City and County of San Francisco, 535 F.3d 1044, 1048 (9th Cir. 2008), quoting Two Rivers v. Lewis, 174 F.3d 987, 991 (9th Cir. 1999). In the absence of a specific statute of limitations, federal courts should apply the forum state's statute of limitations for personal injury actions. Lukovsky, 535 F.3d at 1048; Jones v. Blanas, 393 F.3d 918, 927 (2004).