Barcelona striker David Villa is undergoing treatment for kidney stones after the Spanish league leaders confirmed he was admitted to hospital on Monday night.
Villa, 31, a scored in the 6-1 rout of Getafe, a result which - combined with Atletico Madrid's surprise defeat against Rayo Vallecano - sent Barca 12 points clear at the top of the table.
However, Spain's all-time leading scorer suffered pain and was taken to hospital for treatment.
A club statement said: "The club's medical services have announced that David Villa was admitted to hospital due to a nephritic colic infection. The player will undergo kidney stone treatment in the coming hours.
"At this point, David Villa is doubtful for the match against Granada on Saturday.''
Villa was linked with a move away from the Nou Camp in January, having failed to win back his place in the first-team after breaking his leg in a Club World Cup game against Al-Sadd at the end of 2011.