A new test has been developed in Turku, Finland, that helps in separating heart attack patients from those whose cardiac troponin values are elevated due to renal insufficiency. Blood sample tests for cardiac troponins are an important cornerstone in the diagnostics of heart attack, but the result may be elevated also due to other transient or chronic conditions, such as renal insufficiency, atrial fibrillation or strenuous physical exercise. The new test may help in identifying myocardial infarction (MI) faster and more specifically and thus improve the treatment of MI patients.