A Prospective Pilot Study to Evaluate a New Marker of Ischemia in Chest Pain Triage

Inclusion Criteria: * Subject with compatible symptoms with an acute coronary syndrome, for at least 15 minutes and not older than 3 hours (eg discomfort, tightness or chest pain, pain radiating to the left arm or two arms, pain in the jaw, pain in the back / neck / stomach, breathlessness , cold sweats, nausea / vomiting , dizziness ) * Man or woman, * Patient Did not receive heparin or low molecular weight heparin (LMWH ) before the initial blood sample , * Patient Agreeing to participate in the study and who signed an informed consent Exclusion Criteria: * Minor or major patient trust * Patient Not having signed informed consent (refusal , physical or mental disability ... ) * Patient Who received anticoagulation before carrying blood samples * Patient With a progressive septic processes , neoplasia undergoing treatment, dialyzed kidney failure, a history of surgery or coronary angioplasty less than six months. * Transplanted heart, renal or hepatic * heart attack * Subject Whose symptoms clearly eliminates acute coronary syndrome ( penetrating trauma, traumatic injury by crushing ... ) * Patient Died between the time of inclusion and arrival in the cardiology intensive care ( SIC ) * Patient Withdrawing consent under study