Question asked by @Saroonahadnan via Twitter: I have question about…what is the first cardiac marker in a heart attack? A troponin or CK-MB? Appreciate your help. Answered by Dr. Guichard: There are three generally accepted cardiac biomarkers that are analyzed as a panel – creatine kinase (CK), creatine kinase MB isoform (CK-MB), and cardiac troponin […]