Question

which cpk isoenzyme is run to check for cardiac damage?
cpk - bb
cpk - mm
cpk - ca
cpk - mb

Explanation:

CPK (creatine phosphokinase) has different isoenzymes. CPK - BB is mainly found in the brain and some other tissues. CPK - MM is the major isoenzyme in skeletal muscle. There is no CPK - CA isoenzyme. CPK - MB is the isoenzyme that is significantly elevated in cardiac muscle damage as it is present in relatively higher amounts in cardiac muscle compared to other tissues (although it is also present in small amounts in skeletal muscle, the pattern of elevation and combination with other markers helps in diagnosing cardiac damage).

Answer:

CPK - MB