The supply of O-negative blood shrunk because of the Labor Day holiday weekend and an influx of trauma patients, according to the blood bank.
When a trauma patient arrives at a hospital, there usually isn’t time to check their blood type, so transfusions are performed with O-negative, which is compatible with every other blood type. That means O-negative is always in high demand.
The public can give blood at one of the organization’s six donation centers across San Diego County. Times and locations are available online at SanDiegoBloodBank.org or by calling (800) 469-7322.