London, Jan 11: Troubled Amy Winehouse has been asked to give a drug test to get a visa for Los Angeles where the Grammy Awards are scheduled to take place.
Sources have revealed that the US officials have asked the Rehab star to give a drug test to prove she is clean.
She would have to be clear of drugs for weeks to pass before going to the flashy Los Angeles bash on February 10.
"Amy's been told she needs to pass a drug test before she can get a visa," The Sun quoted a source as saying.
"She is doing much better and has cut down her drug use but still isn't clean.
"Her team are desperate to clean her up as the Grammys is such a big deal. But Amy's not so bothered," added the source.
Winehouse has six nominations for the US music awards and has been lined up to be a star in the ceremony.