Table of Contents
What does positive 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.
Why ASO test is done?
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.
Why ASO titre test is done?
What is considered high ASO level?
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.
What is ASO titre normal range?
Does ASO test require fasting?
This ASO Blood Test is a sensitive test for recent streptococcal infection. Preparation: Fasting for 6 hours required.
Why is ASO test done?
Definition. 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.
Is ASO test confirmatory?
Your doctor may repeat the test within 10 to 14 days to confirm your results. The body produces ASO antibodies within a week after infection. If both tests are negative, your symptoms are not due to a Streptococcus infection, although your doctor may order a different antibody test to be sure.
How high is ASO in rheumatic fever?
The high levels seen in ARF may be due to the time lapse between the streptococcal infection and the occurrence of carditis which allows ASO to reach its peak level (3–6 weeks). Kotby et al. [9] reported ASO titer of 215.4 IU/ml in RHD cases which was lower than that observed in healthy controls (245.09 IU).
Do you treat with antibiotic for positive ASO titer test?
Your doctor may recommend that you stop taking certain medications before this test. Corticosteroids and certain antibiotics may reduce ASO antibody levels. This may make it difficult for your doctor to confirm your diagnosis. Tell your doctor about all the medications you’re taking. Be sure to include both prescription and over-the-counter drugs.
What is the normal ASO titer value in IU ml?
What’s the normal ASO titer for an adult? Normal ASO titer range is 100 IU/mL for adult and preschool age child, u0001200 IU/mL for child at school age. It’s better to call it negative level than normal level. ASO test is a measure of the antistreptolysin O antibodies level in your blood, When ASOT blood test results show:
What is the treatment for ASO positive?
Fever
What is an isohemagglutinin titer?
Isohemagglutinin titers contain both IgM and IgG. Both IgG and IgM titers will be performed for this test. If only IgM or IgG titer is desired, order Isohemagglutinin Titer, IgG (2000271) or Isohemagglutinin Titer, IgM (2000270). Specimens are screened for antibodies; if positive, an antibody panel will be performed.