The clinic takes place in Mucklagh today and tomorrow.
The Irish Blood Transfusion Service is urging people from Offaly to book appointments at their pop up clinic.
It takes place at Mucklagh Community Centre this evening and tomorrow evening from 3:45 to 8 o'clock.
It's the only clinic that will be coming to the Midlands this month, with no scheduled clinics for Laois and Westmeath until September.
Area Manager from the Irish Blood Transfusion Service Barbara Dolan says it's important to keep blood supply steady:
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