If you get a positive test you should arrange a follow up PCR test through your General Practitioner (GP) or through a HSE walk-in test centre. You should restrict your movements in the meantime.
If you get a negative test, the virus has not been detected. This means that you either do not have the virus or your viral load is too low to be detected. If you have symptoms of COVID-19 such as headache, temperature, cough, or loss of your sense of smell or taste, then you should contact your GP for further advice.