Normal Ck Mb Lab Values. To help differentiate heart attack from skeletal muscle damage a ck index can be calculated using ck mb and total ck as follows. Remember that ck and even ck mb are not as specific as troponin i or t to the heart. One can expect to see a rise in ck mb in patients with shock malignant hyperthermia myopathies or myocarditis. Levels should be 2x the patient s baseline.
To help differentiate heart attack from skeletal muscle damage a ck index can be calculated using ck mb and total ck as follows. Increased ck mb usually appears at about 6 hours and peaks at 24 hours post infarction. Ck index ck mb ng ml x100 total ck activity iu l. In the presence of musculoskeletal injury the usefulness of these tests diminishes greatly. Remember that ck and even ck mb are not as specific as troponin i or t to the heart. An elevated ck mb is defined as a value that exceeds the 99 th percentile of ck mb values in a reference control group when evaluating suspected ongoing or reinfarction and the initial troponin level is high sequential samples of a more rapidly appearing biomarker such as ck mb or myoglobin may be employed to clarify the timing of the mi.
If ck mb is elevated and the ck index in higher than 2 5 to 3 0 heart damage is likely.
Remember that ck and even ck mb are not as specific as troponin i or t to the heart. Remember that ck and even ck mb are not as specific as troponin i or t to the heart. Ck mb levels rise 3 to 6 hours after infarction occurs peak at 12 to 24 hours if there is no further myocardial damage and return to normal 12 to 48 hours after infarction. An elevated ck mb is defined as a value that exceeds the 99 th percentile of ck mb values in a reference control group when evaluating suspected ongoing or reinfarction and the initial troponin level is high sequential samples of a more rapidly appearing biomarker such as ck mb or myoglobin may be employed to clarify the timing of the mi. If ck mb is elevated and the ck index in higher than 2 5 to 3 0 heart damage is likely. Ck index ck mb ng ml x100 total ck activity iu l.