ST2 gives additional information about the patient’s health condition, which helps decrease the re-hospitalisation and death risk for patients with acute or chronic heart failure and, at the same time, helps reduce the economic burden for the hospital and the country. Heart failure is the main reason for hospitalisation of patients over 65 years old. Among the released patients, 25% are re-hospitalised after 30 days, after 60 days that number grows to 44% and after 6 months 50% of the patients will have had to be re-hospitalised. If ST2 test is done before discharging the patient and the ST2 value is found to overpass the threshold, it is possible to reduce the need for re-hospitalisation by 17.3% and the rate of mortality in the 30-day period by 17.6%.