Greymouth parents Heather and Dave Gunterare want answers as to why their "perfectly healthy" 15-year-old son died after having his appendix removed at Grey Base Hospital two weeks ago.
Mrs Gunter said she wanted to dispel some of the talk in the community about what caused her son Matt's death, but stressed they would not rest until they had an explanation.
"We don't want anyone pointing fingers and we don't want people blaming health professionals, as we do not yet have the answers."
The death has been referred to the coroner and the hospital is undertaking an internal investigation.
"Matt was sick on the Thursday, ended up in hospital on the Friday and had his appendix removed that night," Mrs Gunter said.