Half of the Covid-19 testing centres are not currently in use, due to a lack of demand.
The HSE set up over 50 community testing centres across the country in March, at a cost of nearly 1.6 million euro.
Only 25 are now in operation on a daily basis, but the HSE says a total of 44 are still available if demand increases.
However, infectious diseases professor Jack Lambert believes they're a waste of money.
