The HSE has asked the public to book appointments online for COVID-19 tests rather than walking in to swabbing centres around the country.
Testing for the virus is up 35% and the request comes in a bid to reduce queues and speed up the testing process.
"To reduce queues, we would like people to book an online appointment rather than walk up,” a HSE source said.
Some walk-ins will be accepted, but people are being advised to book online "to speed up the process at the centres".
The HSE said online self-referrals remain open and capacity has been extended to meet 20,000 a day demand.
"We expect anyone who wishes to get tested can get a test same day, depending on what time they book."