Specifically which enzyme? Cardiac enzyme studies measure the levels of the enzyme creatine phosphokinase (CPK, CK) and the protein troponin (TnI, TnT) in the blood.
Values and units for reporting the results of cardiac enzyme tests vary considerably from lab to lab. The values listed below can be used as a general guide. Check with your lab or doctor for specific value.
Total CPK (creatine phosphokinase) Normal: Men:
55–170 international units per liter (IU/L). The 120 quoted falls within the normal range so I asume that is the cardiac enzyme in quetion. If the test was to determine heart attack damage if any:
Abnormal: CPK levels generally rise within 4 to 8 hours after a heart attack, reach their highest levels within 12 to 24 hours, then return to normal within 3 to 4 days.
Need more information! If there was acute heart attack, there is medication to reduce the heart's workload, etc.