Tallaght hospital in Dublin has defended a new policy that could drive up patients' phone bills.

Last week, the hospital said people can now call a new premium rate phone number when booking a blood test instead of waiting at the walk-in clinic.

There was a backlash from patients however when it was revealed that calls will carry a flat charge of 2.03 from a landline and €2.50 from a mobile.

In a statement, Tallaght hospital says the phone-line is only one of three options open to the public.

Blood tests can be made for free by your GP or booked online.

It is also hoped the new appointment system will streamline the hospital service and cut waiting times.