Comma after "as such"?

Is it correct to use a comma after as such? For example:-

and as such, it is not possible to verify the claim.

In this case, yes. It sets off the last part of the sentence. Comma rules can be complicated, but I think this one comes under "Use a comma to set off parenthetical elements, as in "The Founders Bridge, which spans the Connecticut River, is falling down." By "parenthetical element," we mean a part of a sentence that can be removed without changing the essential meaning of that sentence."

"The Red Sox were leading the league at the end of May, but of course, they always do well in the spring."