United Blood Services is issuing a call for donations in advance of the July 4th weekend. They say they need at least 1,000 donations by July 4th to keep up with pateint needs. They say all blood types are needed, especially O-Negative blood, that’s the universal blood donor type. Volunteer blood donors must be at least 16, weigh at least 110 pounds and be in good health. Underage donors must have a signed permission note from a parent or guardian.