A local councillor says attendance figures for the Monaghan Minor Injury Unit are being used as an "excuse to not extend the opening hours".
RSCI figures show that 797 people attended the injury unit in January and February of this year.
That's the highest combined figures for January and February since 2012, when 886 people used the service in these months.
But at a recent County Council meeting, Sinn Féin's Sean Conlon said this was "smoke and mirrors".
He called for an extension to the opening hours and said Monaghan's Minor Injury Unit is an "outlier" because it is "the only such unit that does not operate on a 7-day week basis".