Super-fast liver transplant as donor, 24, undergoes 48-hour battery of tests and interviews for operation to save best friend

Super-fast liver transplant as donor, 24, undergoes 48-hour battery of tests and interviews for operation to save best friend Billy Sewell, 24, had just hours to live when surgeons got the go-ahead to transplant a slice of liver from his best friendLuke Gumble, also 24, underwent a range of medical and psychological tests before he was allowed to donate | UPDATED: 15:15 GMT, 28 May 2012 Transplant surgeons have carried out a record-breaking live liver transplant operation to save a young man on the verge of death.