The community blood supply has reached dangerously low levels that could potentially affect patient well-being. LifeStream will hold a community blood drive on Thursday, July 4, at the Twentynine Palms Community Services Center on Joe Davis Drive, from 2 to 6:30 p.m. LifeStream now offers donors free cholesterol screening with every blood donation. All prospective donors should be free of infections or illness, weigh at least 110 pounds, and not be at risk for AIDS or hepatitis. To make an appointment to donate blood, call 800-TRY-GIVING.