If you are arrested for an offence related to alcohol and driving or refusing to give a roadside breath sample, you will be required to provide a sample of breath and blood or urine at a Garda station.
Gardaí may also require you to permit a nurse or doctor to take a blood or urine sample from you in situations where you have been involved in an accident in which you were driving and are attending at hospital. It is an offence to refuse to allow a doctor or nurse to take a sample in such situations (unless the doctor or nurse themselves refuse to take the sample on medical grounds).
Where a person is incapable of complying with this above requirement (for example, the driver is unconscious), the Gardaí may direct the doctor or nurse to take a sample of blood from the person. It is an offence for a person to refuse permission for that blood sample to be subsequently tested (unless they have a special or substantial reason for their refusal).
If a doctor advises the Garda that the taking of either a urine or blood sample from the person may adversely affect that person’s health, the Garda will not make the above requirement of a person or give the above direction to a doctor or nurse.
Other controls on road users
Officials from the Revenue Commissioners, including Customs, may also
stop and examine vehicles.
Your vehicle may also be impounded by a Revenue Official or Gardaí.
You may also be stopped by the Gardaí working with Transport Officers
Operator’s Licence.