Prime Minister Scott Morrison remains confident Western Australia's health system would be able to handle the challenges of a rise in COVID-19 cases.
It comes after the state's hard border with the rest of the country was relaxed on Thursday, with vaccinated travellers able to go to Western Australia following nearly two years of restrictions.
While there had been concerns the state's hospitals wouldn't be able to withstand large amount of infections, Mr Morrison said Western Australia was prepared.
"There's been plenty of time to make sure that's the case, plenty of resources to support it," Mr Morrison told Perth radio station 6PR on Friday.
"I know (WA Premier Mark McGowan) will be taking the lessons from the east coast."
The prime minister said he welcomed the state government's decision to reopen to the east after long periods of hard-border measures.
"I'm absolutely thrilled (to see) ... the moving scenes of families reunited and people reunited after such a long wait," he said.
"I thank Western Australia for your patience, your adherence, you've had a very different experience of COVID to the rest of the country and you've had a great deal of success."
After he tested positive to COVID-19 earlier this week, the prime minister said he was recovering and in good spirits.
"I'm certainly better than the last couple of days, so I appreciate all the kind wishes," he said.
It comes as Australia's medical regulator issued a fresh warning not to buy rapid antigen tests that have not been approved for use in the country.
The warning was made following concerns some types of RATs were being repackaged or relabelled for sale without all the components inside.
The Therapeutic Goods Administration has also warned some retail outlets or online stores may try to sell kits unsuitable for use at home.
The administration has already approved 32 different types of rapid antigen tests for use in Australia.
"(Unapproved RATs) have not been assessed by the TGA, meaning they do not come with the same assurances of safety, effectiveness and quality as those that have met Australian regulatory requirements," the TGA said in a statement.
"Unapproved versions may not work as expected, or work at all."
While supply issues for rapid antigen tests, largely seen during the peak of the Omicron wave, have subsided, the administration said it was important people check whether a test had been approved in Australia before being used.
The TGA spokesman said users should purchase the tests from Australian retailers if possible and check if the test was included on the Australian register of therapeutic goods.
It comes as a further 28 deaths have been recorded from COVID-19 in the past reporting period - 26 in Victoria and two in NSW.
NSW registered another 9466 cases on Friday, while there were 6545 in Victoria and 937 in Tasmania.
