More than 900 people were tested for coronavirus at the Albury clinic in just five days.
The Murrumbidgee Local Health District had to move its mobile testing clinic to the Albury showgrounds on Saturday to keep up with the "overwhelming number of people" needing to be tested.
And district disaster manager Denise Garner said more clinics will be set up if the situation changes.
"We identified the Mirambeena Community Centre as somewhere our team could set up from Tuesday and we discovered there was an overwhelming number of people who needed to be tested," she said.
"So we extended the hours from 8am to 8pm for the rest of the week and we are still seeing large numbers.
"So we worked to identify another location where we will be set up for the next couple of weeks operating 9am to 4.30pm."
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Ms Garner said the large number of people getting tested can be put down to a "combination of factors".
"One is the concern with what is happening in Victoria," she said,
"And of course another is we are coming into our winter season so it is natural for people to have respiratory type illnesses and therefore have symptoms of COVID-19.
"The clinic is providing an opportunity for anyone with symptoms to get tested.
"We had a few early arrivals who were very patient and understanding of our setup requirements on Saturday morning but since 9am we have had a steady flow of people.
"If there is a need to open more testing clinics I am sure that will happen but at this stage this clinic is managing the need," she said.
For Lavington retiree Alison Lumb getting tested was about "making sure".
"I've got a bit of a cold and I heard there were a couple of cases of COVID in Lavington, I go down to the local supermarket a bit so I thought I better get tested just to make sure," she said.