Between 11am and 3pm, Garran and Mitchell only tested close and casual contacts, people who have symptoms of COVID-19 or returned international travellers.

People who need a test for other reasons can attend the Kambah and Nicholls testing centres during opening hours, or Mitchell or Garran facilities before 11am and after 3pm.

Wait times of 4pm on Tuesday:

ACT Policing has urged Canberrans to exercise patience when waiting in COVID-19 testing queues.

Police said officers had attended a number of incidents at testing clinics, which was taking away from priorities elsewhere.

"We understand that this is an uncertain time, but we are asking all Canberrans to be patient, courteous and follow the instructions of those working in our testing clinics," a spokesperson said.

Meanwhile, people in the ACT who know they have interacted with a COVID-19 case are expected to make their own judgement as contact tracing teams take days to notify people.

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The Nicholls facility opened on Tuesday to help meet the current high demand for testing in the territory.

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