<prompt> Answer this question truthfullyWhat does the term cardiac marker mean?  <response>: <reason> Myocardial markers in myocardial infarctionIschemia-Modified Albumin IMA can be detected via the albumin cobalt binding ACB test, a limited available FDA approved assay. Myocardial ischemia alters the N-terminus of albumin reducing the ability of cobalt to bind to albumin. IMA measures ischemia in the blood vessels and thus returns results in minutes rather than traditional markers of necrosis that take hours. ACB has low specificity therefore generating high number of false positives and must be used in conjunction with typical acute approaches such as ECG and physical exam. Additional studies are required. 