In this week's replay episode from 2 years ago, we review the important topic of troponin levels in children. What is an abnormal high sensitivity troponin level in children and do the levels vary based upon the assay? What are the differences between high sensitivity troponin I and T levels? Are there differences between boys and girls? Why would using the 97.5%ile upper reference limit result in a more reliable 'line in the sand' in comparison with the more traditional, high sensitivity troponin level cut off of 99th%ile. These are amongst the questions we review with this week's author, Dr. J. Bill McEvoy, Professor of Preventive Cardiology at University of Galway, Ireland. 
DOI: 10.1161/CIRCULATIONAHA.122.063281