text: This observation was based in part on the results of a national survey of trauma centers which revealed that blood alcohol testing , which is often a precursor for any intervention , was routinely conducted at only 64 percent of centers despite a published guideline by the Committee on Trauma of the American College of Surgeons indicating that testing was an essential characteristic for those centers .
  
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  A national survey of trauma centers was conducted , revealing that blood alcohol testing was only conducted at 64 % of centers , although very strict guidelines indicate it is essential .