New research commissioned by the Organ and Tissue Authority shows religious views are one of the most common barriers to donation. Federal Parliamentary Secretary for Health and Ageing Catherine King says it's important for people to know the position of their faith and culture, and for family members to know the intentions of loved ones. The Organ and Tissue Authority program - DonateLife ... the greatest gift - is part of DonateLife week from February 24 to March 3. Jonathan Mitchell, a young lawyer whose life was saved by a liver transplant, told the launch about his emotional journey and how grateful he was. Victoria Ryle, whose daughter Scarlet died less than a year ago, expressed pride that her donation had made a difference. She emphasised the importance of family members understanding the wishes of their loved ones. "The important thing is to have that discussion," she said. Health ambassador Tim Mathieson hosted the launch at the prime minister's Sydney residence, Kirribilli House. Mathieson, Julia Gillard's partner, said he explained his views to his daughter, and she knew he wanted to be a donor. Yael Cass, CEO of the authority, told AAP: "This year religious leaders have shown support for organ donation. We call on all Australians to discuss their wishes with their families. The conversation you have today could help save 10 lives in the future.  Research shows 86 per cent of Australians would consent to donation if they knew their deceased loved one approved.