Most knocks on the head don't result in concussions--fortunately.<br />So why subject patients--and the healthcare system--to costly CT scans?<br />The FDA has approved a new blood test that will identify concussions.<br />The test can predict which blood samples indicate concussions 97.5% of the time.<br />So healthcare professionals can rule out the need for a scan in at least one-third of patients. <br />
