By RNZ
The New Zealand Blood Service says it needs more donors if it is to remain self-sufficient.
Currently the service has 117,000 donors who help save the lives of 30,000 people every year.
Communications manager Asuka Burge said with a growing and ageing population, the country was facing higher-than-ever demand.
She said if more people were not encouraged to join the donor registry, New Zealand might not continue to be self-reliant for blood and plasma.