The Anti-streptolysin O (ASO) Antibody test is a blood test that measures the level of antibodies against the streptolysin O toxin produced by Group A Streptococcus bacteria. Here are a few reasons why getting an ASO Antibody test may be important:
Diagnosis of a recent streptococcal infection: ASO antibody levels rise 1-3 weeks after a person is infected with Group A Streptococcus bacteria. Therefore, an ASO test can help diagnose a recent streptococcal infection, which can cause a variety of illnesses such as strep throat, scarlet fever, and rheumatic fever.
Evaluation of rheumatic fever: Rheumatic fever is a complication of a streptococcal infection that can affect the heart, joints, skin, and brain. An ASO test can help evaluate whether a person has had a recent streptococcal infection that may have led to rheumatic fever.
Monitoring of treatment: If a person is being treated for a streptococcal infection, an ASO test can help monitor the effectiveness of the treatment.
Detection of a carrier state: In some cases, people may be carriers of Group A Streptococcus bacteria without showing any symptoms of infection. An ASO test can help detect whether a person is a carrier of these bacteria.
Overall, an ASO Antibody test can be an important tool in diagnosing a recent streptococcal infection, evaluating rheumatic fever, monitoring treatment effectiveness, and detecting carrier states. If you are experiencing symptoms of a streptococcal infection or have concerns about your streptococcal status, speak with your healthcare provider to determine whether an ASO Antibody test is appropriate for you.