SpinChip Hs-cTnI Determination of the 99th Percentile URL

Cardiac troponins are widely used as a biomarker to aid in the diagnosis of Acute myocardial infarction (AMI). These structural proteins are essential in regulating contraction in cardiac muscle cells, and they are sensitive and specific biochemical markers of myocardial damage. During a heart attack, cardiac muscle cells are injured and release the cardiac marker troponin I (cTnI) into the bloodstream. High-sensitive troponin tests may detect the increase of cardiac troponin in blood within hours after the symptoms of a heart attack has started. According to the European Society of Cardiology (ESC) 2023 guideline for acute coronary syndrome (ACS) in patients presenting without persistent ST-segment elevation, an elevated cTn value above the 99th percentile upper reference limit (URL) indicates myocardial injury, and when accompanied by evidence of acute myocardial ischemia, the disease is defined as AMI. The diagnostic threshold (99th percentile URL) for each hs-cTn test method must be specifically established. The SpinChip high-sensitivity cardiac troponin I (hs-cTnI) test is a new high-sensitive test for measuring troponin I in blood samples, and the analysis may be performed close to the patient (near-patient test). The results may be obtained within 10 minutes, compared to approximately 1 hour for normal laboratory analysis using fresh venous whole blood and plasma samples. The SpinChip Platform consists of the SpinChip hs-cTnI test and the SpinChip Analyzer and may be used at the emergency department to evaluate patients presenting with symptoms of acute myocardial infarction (chest pain). The test can use blood from finger prick or venous blood samples, either as whole blood or separated into plasma. This study is a multicentre, prospective, observational, non-randomised, clinical performance study in healthy subjects to determine the 99th percentile URLs for the SpinChip hs-cTnI test according to recommendations from the International Federation of Clinical Chemistry and Laboratory Medicine (IFCC).