An urgent appeal for blood has been made by United Blood Services in Meridian.
UBS says type AB plasma donors are desperately needed.
During the last few weeks, officials say the demand for that type, which can be used for anyone, has outpaced the supply statewide.
"Only two percent of the people in America are AB, so it's not really a large source of AB, but AB plasma is needed," said Ralph Henson of United Blood Services. "We're at critical levels right now where we have to have AB plasma."
United Blood Service's Meridian office will be open this weekend, Saturday from 9 a.m. to 2 p.m., and Sunday, 1 p.m. to 5 p.m.