Norwegian diagnostics company Cardinor AS landed a CE mark for its Secretoneurin (SN) ELISA (enzyme-linked immunosorbent assay). The blood-based test detects SN, a small 33-amino acid neuropeptide produced by neuroendocrine and heart muscle cells. Studies have shown the biomarker is a predictor of mortality in major patient cohorts, including ventricular arrhythmia, acute heart failure, acute respiratory failure patients with cardiovascular disease (CVD) and severe sepsis.