Auckland's Balmoral Covid-19 testing centre - run by Whānau Ora community clinics - has closed to the public in an effort to prevent staff burnout.
The centre would continue to test people waiting in their cars until 4.30pm.
Staff at the centre said the decision to direct any more traffic to other testing stations was made in the interests of staff wellbeing.
Those who had lined up but were turned away from the site because they wouldn't be tested before 4.30pm were given priority cards and could arrive between 7am and 8am tomorrow to get tested.
The Herald understands the Albany site did the same earlier today but had reopened for a short time to allow a few more cars to enter.