ANTI STREPTOLYSIN – O (ASO)

The anti-streptolysin O (ASO) test measures the level of antibodies against streptolysin O, a toxin produced by Group A Streptococcus bacteria. Elevated ASO levels indicate a recent streptococcal infection, such as strep throat or scarlet fever. This test is used to diagnose and monitor complications of streptococcal infections, such as rheumatic fever and glomerulonephritis. A positive ASO test suggests that the immune system has responded to a streptococcal infection. It is valuable for guiding treatment decisions and monitoring the effectiveness of therapy in preventing complications related to streptococcal infections.