The Blood Service has around 110,000 blood donors on its database and about 42,000 people a year receive blood products. Every year around 28,000 drop off the donor registry.
She said getting younger donors was also a goal.
"If we get them at high school or school-leaving age, often they stay life-long."
People can register to be a donor at www.nzblood.co.nz.
The service's collection will next be at Forum North from September 12-14, then at the Northland Cricket Association from September 15-16.
The mobile collection service will be in the Far North in the week beginning November 21, visiting Kerikeri's St John Ambulance Station on November 21 and 22, Kaitaia RSA on November 23 and 24, and Kaikohe War Memorial Hall on November 25.