Antistreptolysin O Antibodies (ASO) details
What Antistreptolysin O Antibodies (ASO) shows
Antistreptolysin O (ASO) antibodies form in response to a toxin (streptolysin O) released by group A Streptococcus bacteria, so a rising or elevated ASO level indicates a recent strep infection, typically strep throat. It's used mainly to help confirm a preceding strep infection in someone with symptoms suggestive of rheumatic fever (which can affect the heart, joints, skin, and brain) or post-streptococcal glomerulonephritis (kidney inflammation), both of which are delayed immune complications rather than direct infections. ASO levels typically rise 1-3 weeks after infection and peak around 3-5 weeks, so a single result is sometimes less informative than tracking levels over time. It's often paired with anti-DNase B testing to improve detection, since some strep infections trigger one antibody more than the other.
Tests that include Antistreptolysin O Antibodies (ASO)
Anti-Streptolysin O (ASO) Antibody is an antibody produced by the immune system in response to infection with Group A Streptococcus bacteria. Streptolysin O is a toxin released by these bacteria.
- Antistreptolysin O Antibodies (ASO) An antibody that indicates a recent or past strep throat infection. Used to help diagnose complications like rheumatic fever.
Anti-Streptolysin O (ASO) Antibody is an antibody produced by the immune system in response to infection with Group A Streptococcus bacteria. Streptolysin O is a toxin released by these bacteria.
- Antistreptolysin O Antibodies (ASO) An antibody that indicates a recent or past strep throat infection. Used to help diagnose complications like rheumatic fever.
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