Figures from the HSE show the test centre at Tallaght Stadium has the second highest positivity rates for self-referrals in the country, at 23%.
12% of Covid-19 tests taken in County Louth are coming back positive, the highest in the country.
While the test centre with the highest swab positivity rate is Buncrana in Co. Donegal.
28% of people who booked a test in Buncrana came back positive, the highest figure for a test centre in the country.
It's been described as a jaw dropping figure by local GP Dr Denis McAuley.
The second highest swab positivity rate by centre for those who booked a test is Tallaght Stadium at 23%, followed by Castlesaunderson in Cavan, at 18%, then Ardee in Louth and South Douglas in Cork both have a rate of 14%.
Walk-in centres in Tullamore and Limerick also saw high positivity rates at 22 and 16.7% respectively.
The five counties with the highest percentage of positive tests are Louth followed by Offaly, Donegal, Cavan and Monaghan.