Creative Testing Solutions is the largest nonprofit blood donor testing laboratory organization in the United States. In 2018 ... , Creative Testing Solutions will test approximately 9 million donor samples, or 75 percent of the U.S. blood supply, at five high volume laboratory facilities located in Charlotte, Dallas, Phoenix, St. Louis and Tampa. Creative Testing Solutions is owned by three of the leading U.S. blood service providers: American Red Cross, Blood Systems and OneBlood. read more