He is now a doubt, though, for the clash with Madrid this week.
Barça reached the semi-finals of the Copa del Rey after coming back from a two goal deficit to thrash Sevilla 6-1 in the second leg at the Camp Nou.
"Please don't let it be anything serious", Barcelona midfielder Carles Alena said. We hope that he will recover [in time] for Madrid.
We will wait to see what the doctors tell us when they do the tests and we will look at it.
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The alleged offender was known to police prior to last night's incident and is of Middle Eastern descent. Despite the bomb threat, police said the matter was not terrorist-related.
Messi completed 90 minutes but he, and therefore Barcelona, were much more subdued from the point of his return. His teammates did fine without him, routing their fierce rival 5-1 and sealing the fate of coach Julen Lopetegui.
All eyes will be on Lionel Messi who has 19 goals in 19 league matches, as well as Coutinho who hit two goals last time out. His double took his league-leading tally to 21 goals in 22 rounds.
Barcelona's winning streak in La Liga ended at eight matches and they lead second-placed Atletico Madrid by six points, before their closest challengers visit Real Betis on Sunday.
Valencia were weakened when Gameiro departed injured after 40 minutes.
Messi pulled one back with a 39th-minute penalty of his own after Nelson Samedo was fouled by Toni Lato, becoming the first player in Europe's top five leagues to register 20 league goals.
The Valencia forward was then left to regret a sliding miss at the far post as Messi struck again. "If he's in good shape, he'll play on Wednesday". "The team's performance was magnificent".
Without a win in their first three Uefa Champions League ties, they did not win any of their opening six league games and were 15th as recently as December.