Stella Douglas, 51, of Parkwood Road, The Ridge, was devastated by the sudden death of her brother Duncan Sharp last year.
Stella’s appeal comes in the week the Nuffield Trust released a report stating a pilot scheme offering a funeral fund for donors could boost numbers.
Duncan was encouraged to join the Organ Donor Register by his life-long friend Dick Pearse.
Dick, 67, has been on dialysis treatment three times a week for the last three years.
And when he was first diagnosed Mr Sharp immediately offered him one of kidneys.
Duncan was just 48 when he collapsed and died at a friend’s house in August last year.
He had taken a lethal combination of cannabis, alcohol and heroin.
Paramedics rushed him to the Conquest Hospital where he was put in intensive care for three days.
But Stella had to make the decision to turn off the life support machine as he was clinically brain dead.