Goff/INFphoto.comUPDATE: Speaking to E! News Friday, a rep for the singer denies reports that Amy Winehouse has a life-threatening ailment.
"Our official statement from last night still stands: 'Amy has undergone more scans and tests today and we are awaiting the verdict of her doctors,' " says publicist Tracey Miller.
"I can confirm that Amy does have a chest infection, she is not coughing blood, she doesn't have TB, and she is still in the hospital undergoing more tests and following the directions of her doctors. I will let you know if we have any further updates."
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Amy Winehouse's fainting spell has her doctors stumped.
The "Rehab" chanteuse has been hospitalized since blacking out Monday, and doctors at the London facility where she's being treated are conducting further tests, her publicist said, to get to the bottom of what ails her before she resumes performing later this month.
The 24-year-old soul diva is among the headliners at a June 27 London concert celebrating the 90th birthday of former South African president Nelson Mandela. The next day she's due to take the stage at the U.K.'s Glastonbury music festival.
While her spokeswoman insists those shows are still a go, they could be called off should doctors deem it necessary for her recovery.
Winehouse's father, Mitch, who drove his daughter to the clinic, told London's Telegraph that his daughter will remain hospitalized "as long as possible" until her physicians determine a proper diagnosis.
"Amy is doing fine," he added.
Winehouse's camp denied a report by the Sun tabloid she was suffering from an irregular heartbeat and that she was ordered by doctors to clean up her act and quit drugs or risk dying.
(Originally published June 19, 2008 at 12:22 p.m. PT.)