The Blood Supply At Johnston Memorial Hospital Blood Bank In Abingdon Is Critically Low. Donors With Type O Positive Are Needed Immediately. To Donate Blood, Donors Need To Health Between The Ages Of 16 To 65 And Weight At Least 110 Pounds. Jmh Blood Bank Is The Blood Collection Entity Of Johnston Memorial Hospital And Provides Blood Products To Smyth County Hospital And Twin County Regional Hospital In Galax. For More Information, Call 276-619-9708.