Marussia have confirmed that Timo Glock will not contest Sunday's European GP due to a stomach bug.
Glock had been feeling unwell since arriving in Valencia and although he contested the practice session, sat out Saturday's qualifying.
The German unwent tests at a local hospital before a decision was made for him to sit out the European GP.
"Further to the medical problem which prevented Timo Glock from participating in yesterday's qualifying session for the European Grand Prix in Valencia, the Marussia F1 Team can confirm that Timo is unable to compete in today's race," Marussia said in a statement.
"Timo received medical guidance yesterday afternoon and his symptoms suggest that he is suffering from an intestinal infection. He has been advised that it would be unwise for him to race given the severity of the complaint and that he should focus instead on recuperating.
"Timo spent the evening resting at his hotel in Valencia and is in good spirits. He will return home later today."