Wilson G, et al. - This study involved testing of the hypothesis that elevated troponin might be associated with greater use of echocardiography (ECHO) and coronary angiography (CAG) in primary diagnoses other than Sepsis and that this correlation might also include percutaneous coronary intervention (PCI). Primary International Statistical Classification of Diseases and Related Health Problems (ICD-10) diagnoses were grouped into acute myocardial infarction (AMI), primary diagnosis other than AMI (non-AMI), congestive heart failure (CHF), Sepsis, and Other excluding AMI, CHF or Sepsis. Troponin testing was itself shown to be related to greater utilization of ECHO, CAG, and PCI in all groups except CHF. Also, troponin I values >= 0.1 ng/ml were found to be associated with increased rates of ECHO, CAG, and PCI across all groups.