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 To Prepare You do not need to do anything special to prepare for this test. How It Is Done The health professional taking a sample of your blood will: Wrap an elastic band around your upper arm to stop the flow of blood. This makes the veins below the band larger so it is easier to put a needle into the vein. Clean the needle site with alcohol. Put the needle into the vein. More than one needle stick may be needed.
Attach a tube to the needle to fill it with blood. Remove the band from your arm when enough blood is collected. Put a gauze pad or cotton ball over the needle site as the needle is removed.
Put pressure on the site and then put on a bandage. How It Feels The blood sample is taken from a vein in your arm. Risks There is very little chance of a problem from having a blood sample taken from a vein. You may get a small bruise at the site. You can lower the chance of bruising by keeping pressure on the site for several minutes.
In rare cases, the vein may become swollen after the blood sample is taken. This problem is called phlebitis. You can use a warm compress several times a day to treat this. Results A creatine kinase CK test checks the level of the enzyme creatine kinase, which is found in heart tissue and skeletal muscles.
For detection of myocardial infarction, changes in serum CK and its heart tissue MB isoenzyme have been largely replaced by the more cardiac-specific nonenzymatic markers, cardiac troponin I or T. Exercise, muscle trauma contact sports, traffic accidents, intramuscular injections, surgery, convulsions, wasp or bee stings, and burns , and drugs such as cholesterol-lowering statins can damage muscle and increase serum creatine kinase CK concentrations.
Tietz Clinical Guide to Laboratory Tests. Fourth edition. Edited by Wu AHB. Louis, Saunders Elsevier, ; Crit Care Apr;9 2 Morandi L, Angelini C, Prelle A, et al: High plasma creatine kinase: review of the literature and proposal for a diagnostic algorithm. Neurol Sci Nov 5 If you have had a heart attack, your healthcare provider may order a blood test to look for high levels of cardiac troponin. This is another protein found in your heart. This is because cardiac troponin is more sensitive and more specific.
Or the healthcare provider may order tests to see how you are recovering. These tests include:. Because levels of CK may rise if you have a thyroid problem, alcohol abuse, or kidney failure, your healthcare provider may also order tests to look for these diseases. Test results may vary depending on your age, gender, health history, the method used for the test, and other things. Your test results may not mean you have a problem. Ask your healthcare provider what your test results mean for you.
The normal range for general CK varies by age and gender. Race is also known to affect CK levels. The test is done with a blood sample. A needle is used to draw blood from a vein in your arm or hand. Having a blood test with a needle carries some risks. These include bleeding, infection, bruising, and feeling lightheaded. When the needle pricks your arm or hand, you may feel a slight sting or pain.
Afterward, the site may be sore.
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