Update July 15, 2020:
A spokesperson from South Western Sydney Local Health District has confirmed COVID-19 testing numbers for the Highlands and Wollondilly.
As of yesterday July 14 163 tests were conducted at Bowral and District Hospital.
A further 450 tests were conducted at Victoria Park, Picton on the same day.
NSW Health has extended opening hours for COVID-19 testing clinics.
The Bowral testing clinic has extended its time from 8am to 6pm, while a testing clinic at Moss Vale Showground will open on July 16 from 10am.
A spokesperson from South Western Sydney Local Health District said that 3172 COVID-19 tests had been conducted at Bowral & District Hospital up until July 14.
Dr Vince Roche said that there were no new positive COVID-19 cases in the Highlands, with the nearest recorded cases in Tahmoor, Picton and Casula.
"A NSW Health page shows that the Wingecarribee is punching above its weight in terms of COVID-19 tests per 1000 population," he said.
"Overall - prior to this week - testing in the local health district had gone down a bit, but I expect it will be right up there this week on the back of the Crossroads Hotel hot spot."
According to a NSW Health map, a total of 41,987 tests have been completed in the SWSLHD area, which includes the Southern Highlands.
An increase in COVID-19 testing is in response to the cluster of COVID-19 cases in Casula and Picton.
Walk-in testing will be available at Moss Vale Showground from 10am to 4pm on July 16, 17, 18 and 19 July.
Testing is also available at GP clinics.
In Picton, a drive-through clinic has opened at Victoria Park, Menangle Road, in response to a patron of the Picton Hotel testing positive to COVID-19.
The drive-through clinic is open from 8.30am to 6pm until Saturday July 18.
Anyone who visited the Picton Hotel on July 4, 9 and 10, should be tested immediately, even if they do not have symptoms.
The Picton Hotel case is linked to the recent Crossroads Hotel, Casula cluster.
NSW Health said that anyone who attended the hotel between July 3 - 10 must immediately self-isolate until 14 days after they were last there, attend a clinic for testing even if they have no symptoms, watch for respiratory symptoms and get retested should any occur.
Even if they receive a negative test result they must stay in isolation for 14 days.
Drive through testing is available at the Crossroads Hotel, Casula. The clinic will be open until Thursday (16 July) from 8.30am to 9pm.
And additional drive through clinic has also opened at the Ash Road Sporting Complex, Prestons, to provide additional testing in the Liverpool area.
The clinic is open seven days a week from 8am to 6pm until Tuesday 28 July.
Symptoms of COVID-19 include fever (37.5), cough, sore throat, shortness of breath (difficulty breathing), loss of smell and loss of taste.
Other reported symptoms of COVID-19 include fatigue, runny nose, muscle pain, joint pain, diarrhoea, nausea/vomiting and loss of appetite. In more severe cases, infection can cause pneumonia with severe acute respiratory distress.
NSW Health recommends that anyone with respiratory symptoms, loss of sense of smell or taste, or unexplained fever should be tested for COVID-19.
People are reminded to practice social distancing by keeping 1.5 metres distance, wash their hands, sneeze in to their elbow and stay home if unwell or if tested.