Conventional troponin tests are not sensitive enough and require multiple tests over 12 hours to detect heart attack, and are not portable for use outside of the hospital. Mobiosense has developed HERO, a portable, high sensitivity troponin test that allows hospitals to rule in/out heart attack in just 3 hours, and allows for use in ambulances to begin the diagnostic protocol at the patient's side immediately, greatly reducing ER overcrowding and directing patients to the correct path of care.