South Australians will receive their coronavirus test results in less than an hour under a new rapid testing program to be rolled out in the coming weeks.

Key points: New testing capabilities will return results in less than an hour

New testing capabilities will return results in less than an hour About 2,000 tests were undertaken on day one of South Australia's "testing blitz"

About 2,000 tests were undertaken on day one of South Australia's "testing blitz" The results of those tests are expected to come through on Saturday

Fast-tracked results will be available at all metro and 10 regional hospitals for patients deemed "clinically urgent", the State Government announced on Friday.

SA Pathology clinical service director Tom Dodd said the testing had been made available via new technology obtained from the United States.

He said the tests were already available in metro hospitals to detect influenza, but had been developed for COVID-19 in the last two months.

The rapid testing scheme will be rolled out at a cost of $684,000, with each single-test cartridge costing a further $40 and test results available in 45 minutes.

The announcement comes on day two of a testing blitz targeting anyone with coronavirus symptoms, including cough, runny nose, cold symptoms or a fever.

Chief public health officer Nicola Spurrier said about 2,000 tests were performed on Thursday, day one of the blitz.

She said Flinders Medical Centre performed 233 tests, the Lyell McEwin Hospital 224, the Royal Adelaide 167 and the Woman's and Children's Hospital tested 79 people.

"Those numbers are approximately triple the numbers we had on the day before," Dr Spurrier said.

The tests will be available in all metro and 10 regional hospitals. ( AAP: David Mariuz )

"It's so important for us to now be treating more widely because it gives us a much better level of confidence about community transmission in South Australia."

Dr Spurrier said the results for the 2,000 tests were expected to come through tomorrow, while the new rapid testing program should be available within weeks.

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One new confirmed case on Friday

Dr Spurrier said a person in their 50s with a history of overseas travel was the only new confirmed case on Friday.

She said the new case was detected during screening after the Adelaide Airport cluster, but the person is not linked to those 34 cases.

It took the state's total to 435 confirmed cases, but 331 of those patients have now recovered.

There are two people in intensive care, with one of those in a critical condition.

Thirteen people fined in Whyalla

Thirteen people have been fined by police after a large group of people was found drinking at a house in Whyalla, in the Upper Spencer Gulf, on Thursday morning.

Police said they received a tip-off about the partygoers drinking at the house just before 11:00am and attended the location.

A group of 13 adults were found drinking on the porch in the backyard of the house, breaching gathering rules and not complying with social gathering directions.

All 13 people, including two residents of the house and 11 visitors, were issued with expiation notices.

It comes as three adults were fined and at least four others were issued with a caution after police found a group of people gathering at a birthday party in Coober Pedy on Tuesday night.

Police said at least seven adults and 10 children were in attendance at the gathering.