Tests need to be re-done for a range of reasons including not having the correct label attached, the consent form not being filled out correctly, or the sample not reaching the laboratory within seven days.
MDHB National Bowel Screening Programme clinical lead Dr Nick Tindle says the results so far demonstrate how important this programme is for the MDHB community.
"A positive test result doesn't necessarily mean cancer, but the fact that we are getting people tested and have identified one person with cancer shows the value of the programme.
"It will save lives. It's really important that those who haven't sent their test kits back do so."
The screening test detects traces of blood in a bowel motion, which can be caused by polyps (growths) or haemorrhoids (piles) as well as cancer.
People aged 60-74 will get the test kit in the post around their birthday.
If they have an even birthdate (2nd, 4th, 6th of the month), they will receive it in the first year.
If they have an odd birthdate (1st, 3rd, 5th of the month), it will be in the second year of the programme.
Those aged 59 will get their test kit around their 60th birthday.
People who will turn 75 before they are scheduled to be invited will receive a kit prior to their 75th birthday to ensure they can participate in at least one round of screening.
MDHB is the 10th DHB to roll out the programme which started in July 2017.
For more information of the National Bowel Screening Programme, go to www.timetoscreen.nz or to talk to someone about the bowel screening programme call freephone 0800 924 432