What is the normal range for anti-smooth muscle antibody?
What is the normal range for anti-smooth muscle antibody?
They have been found in less than 2% of the normal population. Antibody titres are in the range of 160 to 320 in Type 1 chronic active hepatitis but are often lower, in the other conditions listed above. They can be found in patients with rheumatoid arthritis, multiple sclerosis but probably not SLE.
What is a high amount of smooth muscle antibodies?
If your results show a high amount of SMA antibodies, it probably means you have the type 1 form of autoimmune hepatitis. A lower amount may mean you have the type 2 form of the disease. If no SMAs were found, it means your liver symptoms are being caused by something different than autoimmune hepatitis.
What does positive anti-smooth muscle antibody mean?
Definition. Anti-smooth muscle antibody is a blood test that detects the presence of antibodies against smooth muscle. The antibody is useful in making a diagnosis of autoimmune hepatitis.
What causes smooth muscle antibody positive?
Positive AMSA results are greater than or equal to a dilution of 1:40. Along with autoimmune liver disease, a test that comes back positive for ASMAs may also be due to: chronic hepatitis C infection. infectious mononucleosis.
Can fatty liver cause positive ANA?
Up to 30% of patients with non-alcoholic fatty liver disease (NAFLD) may have antinuclear antibodies (ANA). Low titre (<1:320) ANA positivity is not uncommon, but a high titre is rare. The ANA titre does not correlate with the histological grade of NAFLD.
What are smooth muscle antibodies?
Smooth muscle antibodies (SMA) are autoantibodies, proteins produced by the body’s immune system that recognize and attack its own actin, a protein found in smooth muscle and other tissues, especially the liver. This test detects and measures the amount ( titer) of SMA (or antibody against actin) in the blood.
What is an anti smooth muscle?
Anti-smooth muscle antibody is a blood test that detects the presence of antibodies against smooth muscle. The antibody is useful in making a diagnosis of autoimmune hepatitis.
What is smooth muscle AB titer?
A smooth muscle antibody titer of 1:80 is suggestive of a liver disease called autoimmune hepatitis. This is a disease where the immune system works abnormally and starts attacking your own body cells instead of normal things like bacteria and viruses.
What is Actin antibody?
An actin antibody is one that reacts against one of the forms of actin, which is highly similar between different species of organisms. Its active form is as filaments.