"In these areas, those swabs that are taken will end up being sent to the mothership so to speak, so one of the larger laboratories that's nearby those regions. So there will be delays when this starts to kick on."
He said holiday hotspots simply do not have lab capacity for onsite Covid PCR testing.
Taylor said there is a "distinct possibility" of such delays in holiday hotspot areas. "And I think the people travelling to those regions need to be very, very aware of that."
There's only a small pool of medical laboratory scientists and technicians in New Zealand, Taylor said.
It's not just the testing capacity but it's the medical capacity in the regions, he said.
"It really is just a matter of time before we really do get community spread throughout New Zealand and our staff are going to more than likely bare the brunt of that."
He said laboratories don't only do Covid testing.
"I will reiterate all of the big hospitals will obviously still be operating 24 hour services doing the acute work that's coming through. But be aware we do everything. We don't just do Covid testing, so sometimes things are just going to have to wait in those periods."
Meanwhile Taylor warned that Napier Port's decision to do its own surveillance testing for Covid-19 is a disaster waiting to happen.
The port says the saliva tests, which are done by a nurse and a trainee, will not replace official public health testing but provide an extra layer of protection.
However, Taylor says these tests won't have any legitimacy.
"This is not a job that you walk in off the street and have someone that's wandering around doing the testing, that is not how it goes, it's a very controlled environment."
Taylor said to have unregulated testing could put the wider population at risk.
The Ministry of Health declined an interview with RNZ Checkpoint.
In a statement it says Covid-19 testing remains a priority over the Christmas and New Year period.
"The ministry works closely with DHBs and laboratories to manage demands for testing, and to reiterate the importance of processing and returning tests as quickly as possible.
"It should be noted that samples of close contacts of cases and high risk individual are prioritised by laboratories."
Community testing centres will continue to be open throughout the holiday period, it said.
Urgent care clinics will also be available for testing purposes. These are privately run and it is up to them to manage their hours of operation and staffing levels to meet demand for their services during this period.
