Its predecessors included the first blood bank in the United States, which through expansions grew in the San Francisco and Sacramento areas.
On June 17, 1941,[2] the Irwin Memorial Blood Bank opened its doors in response to the lack of a sufficient method of obtaining and storing blood for later use – by both the military and community hospitals in the San Francisco area.
The aim was to ensure that patients in the Bay Area would never again be without an adequate supply of blood.
[3] The San Francisco County Medical Society granted the fledgling blood bank permission to operate out of the basement floor of an old San Francisco home, the Irwin Mansion.
In April 1955, Irwin opened its new doors at Masonic and Turk Streets in San Francisco.