Creatine Kinase

What is Creatine Kinase (CK)?

Creatine Kinase (CK) is an enzyme that is found in the blood. It is made up of proteins that work to transport energy to the muscles of the body. CK is found in "highest concentrations" in the heart muscle, and skeletal muscles. CK helps the body control chemical reactions in cells, including those involved in muscle contraction.

Preparation for a Creatine Kinase Test

A Creatine Kinase Test is a simple blood test and requires no special preparation. The patient needs to fast for 8 to 12 hours prior to the test. No medication needs to be stopped and no special diet is required. The blood sample is taken from the patient's arm, and depending on the results, further tests may be required.

Types of Creatine Kinase Tests

There are two types of Creatine Kinase Tests. One is the CK-Total test, which measures all forms of CK, and the other is the CK-MB test, which measures only the CK isoenzyme that is found in muscle. The CK-MB test is more specific than the CK-Total test and is used to diagnose heart attack or other forms of cardiac injury.

Risks Involved with Creatine Kinase Tests

There are generally no risks associated with a Creatine Kinase Test. In some cases, however, the needle used to draw the blood sample may cause temporary bruising or pain.

Why is Creatine Kinase Test Performed?

  • To diagnose and monitor heart attacks and other cardiac injuries.
  • To diagnose muscular diseases.
  • To evaluate patients with low back pain and muscle pain.
  • To measure effectiveness of cholesterol reduction and increasing physical activity.

When is a Creatine Kinase Test Recommended?

  • To diagnose a heart attack and other heart-related issues.
  • To diagnose certain types of muscular diseases.
  • To evaluate patients with low back pain or muscle pain.
  • To monitor patients who are being treated for high cholesterol.
  • To measure the effectiveness of physical activity.