CK-MB test is a sandwich immunoassay. When serum sample is added to sample pad, it moves through the conjugate pad and mobilizes gold anti-CK-MB conjugate that is coated on the conjugate pad. The mixture moves along the membrane by capillary action and reacts with the anti-CK_x005f MB antibody that is coated on the test region. If CK-MB is present at levels of 7.0 ng/ml or greater, the result is the formation of a colored band in the test region. If there is no CK-MB in the sample, the area will remain colorless. The sample continues to move to the control area and forms a pink to purple color, indicating the test is working and the result is valid.
You may need this test if your healthcare provider thinks you are having a heart attack. Symptoms of a heart attack often include:
Pain or discomfort in the chest, such as a squeezing sensation or feeling of fullness
Pain in the neck, back, left arm, or jaw
Shortness of breath
Lightheadedness or dizziness
Nausea or vomiting
Your healthcare provider may also order a test to measure cardiac troponin (CTn). This test is more often used than CK-MB because it more specifically shows heart damage.
Your healthcare provider may also order an electrocardiogram (ECG). This is done to measure electrical activity in your heart and help diagnose a heart attack.