Description
The Anti Streptolysin O (ASO) test measures the level of antibodies in your blood against streptolysin O, a substance produced by group A Streptococcus bacteria. When you have an infection caused by these bacteria, your body creates antibodies to fight it off. This test helps doctors determine if you’ve recently had a strep infection, which can lead to complications like rheumatic fever or kidney inflammation if not properly treated.