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The official definition for anti streptolysin is " the antibody made against streptolysin O, an immunogenic, oxygen-labile hemolytic toxin produced by most strains of group A and many strains of groups C and G streptococci."

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Antistreptolysin O titer?

DefinitionAntistreptolysin O (ASO) titer is a blood test to measure antibodies against streptolysin O, a substance produced by Group A Streptococcus bacteria.Alternative NamesASO titer; ASLOHow the test is performedBlood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood.Next, the health care provider gently inserts a needle into the vein. The blood collects into an airtight vial or tube attached to the needle. The elastic band is removed from your arm. Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.In infants or young children, a sharp tool called a lancet may be used to puncture the skin and make it bleed. The blood collects into a small glass tube called a pipette, or onto a slide or test strip. A bandage may be placed over the area if there is any bleeding.The blood is then sent to the laboratory for analysis.How to prepare for the testYou should not eat for 6 hours before the test.How the test will feelWhen the needle is inserted to draw blood, you may feel moderate pain, or only a prick or stinging sensation. Afterward, there may be some throbbing.Why the test is performedThis test is used to detect prior infection by Group A Streptococcus, the bacteria responsible for diseases such as:Bacterial endocarditisGlomerulonephritisRheumatic feverScarlet feverStrep throatThe ASO antibody may be found in the blood weeks or months after the strep infection has gone away.Normal ValuesNormal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.What abnormal results meanAbnormal results may be due to:Active streptococcal infectionBacterial endocarditisPost-streptococcal glomerulonephritisRheumatic feverScarlet feverWhat the risks areVeins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.Other risks associated with having blood drawn are slight but may include:Excessive bleedingFainting or feeling light-headedHematoma (blood accumulating under the skin)Infection (a slight risk any time the skin is broken)ReferencesBisno AL, Stevens DL. Streptococcus pyogenes. In: Mandell GL, Bennett JE, Dolin R, eds. Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2009:chap 198.Bisno AL. Nonsuppurative poststreptococcal sequelae: Rheumatic fever and glomerulonephritis. In: Mandell GL, Bennett JE, Dolin R, eds. Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2009:chap 199.


Related Questions

What is anti streptolysin?

The official definition for anti streptolysin is " the antibody made against streptolysin O, an immunogenic, oxygen-labile hemolytic toxin produced by most strains of group A and many strains of groups C and G streptococci."


What is an antistreptolysin?

An antistreptolysin is an antibody made against streptolysin.


Does streptococcus pyogenes produce exotoxin?

Yes, Streptococcus pyogenes can produce exotoxins such as streptolysin O and streptolysin S, which contribute to its pathogenicity. These exotoxins can damage cell membranes and contribute to tissue destruction during infections.


What is the Treatment for a high aso titer?

This is a serologic test, known as anti-streptolysin O. It measures the quantity of antibody to a component of streptococcal bacteria. This test is useful in diagnosing scarlet fever, rheumatic fever and other streptococcal disease. Treatment would depend on which particular malady needs to be dealt with.


What is a normal ASO?

A normal ASO (anti-streptolysin O) test measures the level of antibodies produced in response to streptolysin O, a toxin produced by Group A Streptococcus bacteria. Typically, a normal ASO titer is considered to be below 200 U/mL, but reference ranges can vary by laboratory. Elevated levels may indicate a recent streptococcal infection, such as strep throat or scarlet fever. It's important to interpret ASO results in conjunction with clinical symptoms and other diagnostic tests.


In which conditions is ASO titer raised?

ASO (Anti-streptolysin O) titers are raised in conditions such as streptococcal infections, rheumatic fever, and post-streptococcal glomerulonephritis. These conditions are typically associated with an immune response to Group A Streptococcus bacteria.


What are the effects of antistreptolysin-o?

Antistreptolysin O (ASO) is an antibody produced in response to streptolysin O, a toxin released by Group A Streptococcus bacteria. Elevated ASO levels indicate recent streptococcal infection, which can be associated with conditions like rheumatic fever or post-streptococcal glomerulonephritis. Testing for ASO helps in diagnosing these complications, but it does not have direct therapeutic effects. Instead, treatment focuses on addressing the underlying streptococcal infection.


What are exoenzymes from pathogens?

Exoenzymes are digestive enzymes that are secreted by the pathogen into the surrounding tissues, allowing the pathogen to further invade the host's tissues. For example, Streptococcus pyogenes secretes streptokinase to dissolve blood clots, allowing wound invasion, and streptolysin, which digests red blood cells and other body cells. Clostridium perfringens, an agent of gangrene, secretes a lipase that damages cell membranes, creating more dead tissue for these bacteria to invade.


Your aso titer level is 400 iul and your age was 29 yrs is this a serious problem in future and what care should you take?

When the body is infected with the bacteria streptococci, it produces antibodies to combat the various antigens that the streptococci will produce. One such antibody is the anti-streptolysin O or ASO to attack the antigen streptolysin O whose main purpose is to break open the red blood cells to cause hemolysis. The ASO titer test can determine a raised or rising level of ASO which can indicate a past or present infection, and a normal level value is around 200 units. When ASO levels are high, chances are the individual is infected with streptococcus which is signaled by a soar throat leading to more serious conditions such as rheumatic fever, scarlet fever, and disorder of the kidneys. Steps to take to prevent streptococci infections are; avoid people with soar throats or known to have strep throats, wash hands frequently after using items which may harbor the bacteria, don't share food or drinks with a sick individual.


Is aso titer 258.0 is normal?

A titer of 258.0 for anti-streptolysin O (ASO) is generally considered elevated, as normal levels typically range from 0 to 200 IU/mL, depending on the laboratory and reference values used. Elevated ASO titers can indicate a recent streptococcal infection. However, interpretation should be done in the context of clinical symptoms and other tests, so it's best to consult a healthcare professional for an accurate assessment.


Does positive ASLO link to false positive ANA?

A positive anti-streptolysin O (ASLO) titer can sometimes be associated with a false positive antinuclear antibody (ANA) test. This is because both tests can reflect underlying inflammatory processes or infections, which may lead to nonspecific antibody production. However, a positive ASLO is more directly related to streptococcal infections, while ANA is typically associated with autoimmune disorders. Therefore, while there can be a link, it is not a definitive or common occurrence.


How can you back to normal high aso titer?

To return to normal high anti-streptolysin O (ASO) titers, it's essential to address the underlying infection or condition causing the elevated levels. This typically involves seeking medical treatment, which may include antibiotics for streptococcal infections. Maintaining a healthy lifestyle, including proper hydration, nutrition, and rest, can support the immune system in recovery. Regular follow-up with a healthcare provider is crucial for monitoring ASO levels and overall health.