Diagnostic tests

Anti-smooth muscle blood test

An anti-smooth muscle antibody (ASMA) test is a blood test that is used to detect the presence of antibodies to smooth muscle in a person's blood. Smooth muscle is a type of muscle tissue that is found in the walls of organs and blood vessels, and it is responsible for controlling the movement of these structures. The presence of anti-smooth muscle antibodies in the blood can be a sign of a number of different autoimmune disorders, including autoimmune hepatitis and primary biliary cirrhosis. An ASMA test is often ordered as part of a routine medical examination or when a person is experiencing certain symptoms, such as fatigue or jaundice.

This page is provided for educational and informational purposes only and does not constitute the provision of medical advice or professional services. The information provided should not be used for diagnosing or treating a health problem or disease, and those seeking personal medical advice regarding any of the tests and conditions referenced above are advised to consult with a licensed clinician. Always seek the advice of your qualified health provider regarding a medical condition and do not disregard professional medical advice or delay in seeking it because of any information on this page. If you think you may have a medical emergency, immediately call 911 or go to the nearest urgent care center or hospital.

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