The Government says it has increased PCR testing capacity by nearly 20,000 a day to deal with a surge in Omicron cases.
It has also expanded the use of rapid antigen testing, particularly for at-risk people and critical workers.
The testing boost takes the daily maximum of the Government's preferred Covid-19 tests from 39,000 a day to 58,000, with the ability to surge to 77,600 tests where necessary for a seven-day period.
"With Omicron cases now in the North and South islands, testing, tracing and quickly isolating any Covid-19 cases and their contacts will be all the more important for protecting whānau and communities," Associate Minister of Health Dr Ayesha Verrall said.