Laboratory testing services company Singulex, Inc. of Alameda, Calif., has agreed to resolve allegations that it violated the False Claims Act by billing federal health care programs for medically unnecessary testing, announced United States Attorney Alex G. Tse, Special Agent in Charge Steven J. Ryan of the Health and Human Services' Office of Inspector General (HHS-OIG), Special Agent in Charge Chris D. Hendrickson of the Western Field Office, Defense Criminal Investigative Service (DCIS), and Special Agent in Charge John F. Bennett of the Federal Bureau of Investigation San Francisco Field Office.