Northfield Lab's experimental blood substitute Polyheme is currently in randomized phase III clinical trials recruiting patients without informed consent all over the country. At one point, it was being tested in as many as 27 cities; it is still being tested in 23 hospitals in 20 cities. With the FDA's approval, Northfield Lab has recruited hospitals to participate in the trial study with exemption from informed consent requirements on study participants. Although Northfield Lab claims that extensive information on the study has been made public, a vast majority of the general public has never heard of the trial.