Why is a creatine kinase (CK) test done?
Many things can cause an increase in total creatine kinase (CK) and in the isoenzymes. This test is often used to look for damage to muscles. For example, it might be used to see if someone who has muscle pain has serious muscle damage.
- The isoenzyme MM is raised in most conditions that also cause an increase in total CK.
- MB can be raised in problems such as injury to muscles (including after surgery), muscular dystrophy, chronic kidney failure, or an infection in the heart.
- BB may be raised in problems such as brain injury, bleeding in the brain, and some types of cancer.
How is a creatine kinase (CK) test done?
A health professional uses a needle to take a blood sample, usually from the arm.
How do you prepare for a creatine kinase (CK) test?
In general, there's nothing you have to do before this test, unless your doctor tells you to.
What do the results of a creatine kinase (CK) test mean?
Normal
Each lab has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The normal range is just a guide. Your doctor will also look at your results based on your age, health, and other factors. A value that isn't in the normal range may still be normal for you.
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