2. CK Index
The CK and CK index rapidly rise together in a time course consistent
with acute myocardial infarction. Even at 8 hours the laboratory
suggests myocardial injury. CK index is a calculated parameter that
allows you to evaluate the amount of CK-MB relative to the amount of
total CK. In myocardial infarction, CK-MB makes up a high percentage
of total CK, so CK index rises with CK-MB. In skeletal muscle injury,
CK can be very high but CK-MB is only a tiny portion of the total CK,
so CK index stays low.
