There were no new coronavirus cases recorded in South Australia on Saturday despite more than 2000 people being checked in a testing blitz on Thursday.

Another 2000 people were tested on Friday and those results will be known on Sunday.

“(These are) very good results,” South Australia Premier Steven Marshall said.

“We had a huge number of results coming in over the past two days and thankful there is nothing alarming (in the results).”

Seven people in South Australia are in hospital and two are in ICU.

There were no new coronavirus cases recorded in South Australia on Saturday despite more than 2000 people being checked in a testing blitz on Thursday. Credit: David Mariuz / AAP

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A 68-year-old man remains critical and another man is stable.

There have been 435 cases in South Australia and 89 remain active.

Four people have died.

The state has conducted 41,000 tests total which is 2.5 per cent of the population.

In the video below: Little known symptoms of COVID-19