- Fernando Alonso leaves hospital three days after his crash in Barcelona
- The double world champion will recover at his family home in Spain
- Kevin Magnussen will drive for McLaren in final preseason test in place of Alonso
The double world champion was concussed and airlifted to hospital
when his McLaren ran wide during winter testing at the Circuit de Catalunya -- home to the Spanish Grand Prix -- on Sunday.
"We are pleased to confirm that Fernando Alonso has now left hospital," McLaren said in a statement.
"He has returned to his family's home in Spain for further rest and recuperation."
Alonso gave a thumbs-up to photographers as he walked out of the Cataluna Hospital on Thursday and drove away with his girlfriend.
Kevin Magnussen, who effectively lost his McLaren seat to the returning Alonso, will share driving duties with Jenson Button at the four day test which begins on Thursday.
Alonso chose to leave Ferrari at the end of the 2014 season and rejoin McLaren, which is also renewing its technical partnership with Japanese engine manufacturer Honda for 2015.
The 33-year-old -- regarded by his peers as the best driver on the grid -- is chasing a third world crown but, so far, he has not had chance to gauge the possibilities of realizing that ambition with McLaren.
Early reliability problems meant Alonso had only completed 117 laps in the MP4-30 race car before his presea