What is the sensitivity value of ASO?
The combination of ASO and ADNaseB was the most sensitive and specific combination for identifying post-streptococcal disease (sensitivity 95.5%, specificity 88.6%).
What is the general cut off value for ASO level in ASO test?
Generally, an ASO test value below 200 is considered normal. In children under the age of 5, the test value should be less than 100. Results will vary by laboratory. If your results show that you have an elevated ASO value, you may have a post-streptococcal complication.
Which disease would cause an increased ASO titer?
ASO titers are elevated in 85% of patients with rheumatic fever but may not be elevated in cases involving skin or renal sequelae. A marked rise in titer or a persistently elevated titer indicates that a Streptococcus infection or post-streptococcal sequelae are present.
What does a high ASO titer mean?
An elevated titer of antibody (positive ASO) or an ASO titer that is rising means that it is likely that the person tested has had a recent strep infection. ASO titers that are initially high and then decline suggest that an infection has occurred and may be resolving.
What does ASO titer test for?
Antistreptolysin O (ASO) titer is a blood test to measure antibodies against streptolysin O, a substance produced by group A streptococcus bacteria. Antibodies are proteins our bodies produce when they detect harmful substances, such as bacteria.
What happens if ASO titre is high?
What is a high titer level?
In certain conditions, a low titer may essentially indicate the efficient removal of infectious pathogens by the immune system. In contrast, a high titer may simply be due to the presence of residual antibodies from a previous infection, or unsuccessful attempts to form antigen-antibody complexes.
What does ASO mean in rheumatoid arthritis?
antistreptolysin-O (ASO) titre in rheumatoid arthritis. (RA). The mean and the upper ASO values were. first established in a group of normal subjects and in. patients with no history of recent streptococcal.
How do you treat ASO titre positive?
In most cases, penicillin is used to treat patients with increased levels of ASO titre.
What is the treatment for ASO positive?
Increased levels of ASO titre in the blood could cause damage to the heart and joints. In most cases, penicillin is used to treat patients with increased levels of ASO titre.
What should the ASO titer be for a blood test?
A value from 0.0 to 250 unit/ml it means probably no strep infection, ASO titer from 250 to 400 titer/ml means equivocal result need a confirmation by serial testing, ASO titer higher than 400 titer/ml means probable recent strep infection.
How is the antistreptolysin O ( ASO ) test used?
The antistreptolysin O (ASO) test is a frequently used tool for detecting recent Streptococcus pyogenes infection and is helpful in the diagnosis of diseases like rheumatic fever. Using data from a 1989 prospective stu …
When to use a high ASO titer for PSGN?
A high ASO level is more likely to be significant and sustained ASO levels may indicate persisting infection. PSGN or RF can easily be over-diagnosed when an isolated, equivocal, titre is used as evidence. Time-course after streptococcal infection ASOT and ASK start to rise a few days after infection commences. ADNAse tends to rise somewhat later.
What does anti streptolysin O titers mean?
Anti-streptolysin O is an antibody reaction against against streptococcal toxin left over in the body after a specific strep infection – generally Group A Beta-Hemolytic Strep. 1) ASO Titers (aka. levels) need to be compared to a baseline.