Description
This test evaluates the levels of antistreptolysin O (ASO) in the blood. ASO is an antibody directed against streptolysin O, a toxin released by Group A Streptococcus bacteria (Streptococcus pyogenes).
This test is often ordered alongside Anti-DNase B. Anti-DNase B antibodies typically remain elevated longer than ASO and may remain elevated for several months after infection.