A column chromatographic method for the combined analysis of creatine kinase-MB (CPK-MB) and lactate dehydrogenase 1,2 (LDH 1,2) isoenzymes.

A column chromatographic method for the simultaneous single-eluate isolation of CPK-MB and LDH 1,2 has been evaluated. The method is rapid in that the entire isolation is completed in less than an hour and subsequent analysis can be performed using presently available spectrophotometric methods and reagents without the need for electrophoresis equipment. In addition, since the isoenzymes are directly isolated, quantitation of enzymatic activity can be performed with precision. This technic permits detection of CPK-MB and LDH 1,2 in samples with normal values of total CPK and LDH utilizing a routine laboratory spectrophotometer. The sensitivities for diagnosis of acute myocardial infarction are 95% for LDH 1,2 and 100% for CPK-MB. The specificities for diagnosis of acute myocardial infarction are 86% for LDH 1,2 and 96% for CPK-MB.