Lady GaGa tested for killer disease

Lady GaGa has revealed that she has been tested for a life-threatening disease.

The 'Alejandro' singer, who has suffered a series of health scares on her Monster Ball tour, has now admitted she may have lupus, a disease that killed her aunt.

GaGa has undergone hospital tests but refuses to reveal if she is carrying the disease, the Daily Star reports.

She said: "I’m very connected to my aunt, Joanne, who died of lupus. It’s a very personal thing."

The disease affects the immune system, and could explain her series of blackouts on stage in the past few months.