Anti-Streptolysin O (ASO) Titer Test

A positive ASO (Anti-Streptolysin O) test indicates the presence of antibodies against streptolysin O, a toxin produced by the bacteria that cause strep throat. It suggests a recent or past streptococcal infection. A positive result does not directly imply a specific medical condition but may indicate exposure to the bacteria.

A high ASO titre suggests an elevated level of anti-streptolysin O antibodies in the blood, indicating recent or past streptococcal infection. The story of elevation can vary, and healthcare providers use it to assess the severity and timing of the disease. A high titre does not necessarily correlate with the severity of symptoms.

Normal ASO levels can vary between individuals and laboratories. A normal range is typically less than 200 Todd units/mL. However, specific reference ranges may differ, and healthcare providers interpret results based on the laboratory's standards.

A positive ASO test does not directly indicate arthritis. It signifies exposure to streptococcal bacteria commonly associated with strep throat. In some cases, untreated streptococcal infections can lead to rheumatic fever, which may cause joint inflammation and, in severe cases, lead to rheumatic arthritis. However, a positive ASO test alone does not confirm arthritis; further evaluation by a healthcare professional is needed to determine the underlying cause of joint symptoms.

The Anti-Streptolysin O (ASO) Titer test is a blood test that measures the concentration of ASO antibodies, which are produced in response to an infection with Group A Streptococcus bacteria. The test helps in diagnosing and monitoring conditions like rheumatic fever.

Normal values can vary, but generally, ASO Titers less than 200 Todd units/mL are considered normal. However, normal ranges may vary between laboratories.

No, the ASO Titer test is different from a throat culture. While a throat culture can detect a current strep throat infection, the ASO Titer test measures antibodies to streptococcal bacteria, indicating a past or recent infection.

In case of abnormal ASO Titer levels, it is advisable to consult with a general physician or an infectious disease specialist.