The Irish Blood Transfusion Service says it's vital it gets blood supply back up to normal levels after a recent drop in donations.
The service usually has seven days worth of blood supply, but now only has three days' supply in O-Negative, A-Negative, and B-Negative blood types.
Storm Babet had a huge impact on services last week, as people weren't able to donate and some clinics had to be moved and cancelled as a result of the weather.
Julianne Kelly from the IBTS is urging donors to contact them: