Village of The Hills resident Scott Tracy donates blood during a recent blood drive in Lakeway.



Austin Donor Center, 4300 N. Lamar Blvd., Austin



South Austin, 3100 W. Slaughter Lane, Austin



Round Rock Donor Center, 2132 N. Mays St., Ste. 900, Round Rock



Officials with We Are Blood, formerly The Blood Center of Central Texas, said a recent “dramatic increase” in blood usage has caused the organization to experience a “dangerously low” shortage of O negative blood—the universal donor blood type that can be given to any patient.We Are Blood officials said in a statement that with Monday’s rainy weather and the holiday weekend approaching, it is particularly critical for eligible O negative donors to donate as soon as possible.Those willing to donate blood in Central Texas can visit:For more information, visit www.weareblood.org