The Health Minister is appealing to the public to bear with GPs, as the online system for referring patients to get tested for coronavirus has crashed.
Doctors surgeries say their phone lines are jammed with calls, meaning many can't get through.
GPs can now order a test for someone with symptoms online, but so many are using it the system can't cope.
Minister Simon Harris says only people with symptoms should be contacting doctors for tests:
"It is a massive body of work we're asking our GPs, our healthcare professionals and the HSE to deliver.
"We need all of us to be responsible in relation to that. Keep your GP slots for people who really need them, be patient with your GP who's under a lot of pressure when you phone them.
"The test is only required if you have symptoms, not because you'd like one."