Cardiac disease biosensors are the biomarkers released during myocardial infarction or myocardial injury. Suspected patients are tested for troponin I (TnI), troponin T (TnT), brain natriuretic peptide (BNP) and N-terminal prohormone b-type natriuretic peptide (NT-proBNP), myoglobin, creatine kinase-MB (CK-MB), and D-dimer for timely, prompt, cost-effective diagnosis of cardiovascular diseases.