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Antistreptolysin O (ASO) titer is a blood test to measure antibodies against streptolysin O, a substance produced by Group A Streptococcus bacteria.
Alternative NamesASO titer; ASLO
How 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:
The 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 infection
- Bacterial endocarditis
- Post-streptococcal glomerulonephritis
- Rheumatic fever
- Scarlet fever
Veins 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 bleeding
- Fainting or feeling light-headed
- Hematoma (blood accumulating under the skin)
- Infection (a slight risk any time the skin is broken)
Bisno 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.
What else can I help you with?
What does this brainteaser mean pot o o o o o o o o?
The brainteaser is likely referring to the phrase "pot of gold" where the "o o o o o o o o" represents multiple rounds of the letter "o" suggesting a pot filled with gold coins. It's a playful way to depict a pot of gold in a visual format.
What is the negative equivalent of the phrase o o?
The negative equivalent of the phrase "o o" would be "not o not o."
What blood type can donate donate to all blood?
Ab+ universal receiver o- universal donor blood types: can donate to: can receive from: ab+: ab+: ab+ ab- a+ a- b+ b- o+ o- ab-: ab+ ab-: ab- b- a- o- a+: a+ ab+: a+ a- o+ o- a-: a+ a- ab+ ab-: a- o- b+: b+ ab+: b+ b- o+ o- b-: b- b+ ab- ab+: b- o- 0+: o+ a+ b+ ab+: o- o+ o-: o+ o- a+ a- b+ b- ab+ ab-: o-
How do you get O- blood type?
O- blood type is inherited when both parents pass on the O- gene to their child. This means that a person with O- blood type must have two parents who are either O- or have O- genes.
What type of blood can a type o person receive?
No, they cannot. A person with O+ blood has a special antigen, or protein, on its extracellular membrane. The person with O- blood will form antibodies to the antigen and attack the O+ red blood cells killing them, this will eventually cause anemia and become a health problem.
What is the purpose of the antistreptolysin O titer?
to determine whether a previous group A Streptococcus infection has caused a poststreptococcal disease, such as scarlet fever, rheumatic fever, or a kidney disease called glomerulonephritis.
Does alcohol affect ASO Titer results?
Yes, alcohol can potentially affect ASO (Antistreptolysin O) titer results. High alcohol consumption may lead to liver dysfunction, which can influence the production of antibodies and overall immune response. Additionally, alcohol can interfere with laboratory testing procedures or the accuracy of results. It is generally advisable to avoid alcohol consumption before medical testing to ensure accurate outcomes.
What does aso titer 250 mean?
An ASO titer of 250 refers to the level of antistreptolysin O antibodies in the blood, indicating a response to a recent streptococcal infection. Normal levels typically range from 0 to 200 units per milliliter, so a titer of 250 suggests a significant immune response. Elevated ASO titers can help diagnose conditions like rheumatic fever or post-streptococcal glomerulonephritis. However, it's important to interpret this result in the context of clinical symptoms and other tests.
What does the medical abbreviation ASO mean?
ASO stands for antistreptolysin-O, which is an antibody your body makes against streptococcus bacteria.
How much does a titer test cost?
Plenty o' green
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.
Is tonsillectomy advisable in raised aso titer?
Tonsillectomy may be considered in patients with elevated antistreptolysin O (ASO) titers if there are recurrent throat infections, complications from streptococcal infections, or other indications such as obstructive sleep apnea. However, the decision should be made on a case-by-case basis, taking into account the patient's overall health, symptoms, and history of infections. It is essential to consult with an ENT specialist to evaluate the necessity and timing of the procedure.
Your result of widal test is antigen O.180 antigen H.. 1160 antigen A.. no titer antigen B.. no titer What is the meaning of this results?
you might be suffering from typhoid fever as o antigen more than 100 and h antigen more than 200 are significant consult your doctor immediately for proper treatment dr.mahwash
Are you safe when aso titer is positive?
A positive ASO (anti-streptolysin O) titer indicates a recent infection with Group A Streptococcus, which can lead to conditions like rheumatic fever or post-streptococcal glomerulonephritis. While a positive titer itself does not mean you are currently infected or at risk of complications, it suggests a past infection that may require monitoring or treatment. It's essential to consult a healthcare provider for appropriate evaluation and management.
How do you neutralize high levels of antistreptolysin?
Neutralizing high levels of antistreptolysin, specifically anti-streptolysin O (ASO), typically involves addressing the underlying streptococcal infection rather than directly targeting the ASO itself. Treatment usually includes antibiotics to eliminate the infection, which can subsequently lower ASO levels. Additionally, supportive care to manage symptoms and any complications may be necessary. Always consult a healthcare provider for appropriate diagnosis and treatment options.
What if salmonella typhi O is 1320?
The Widal test is a presumptive (positive) serological test for enteric fever or undulant fever (typhoid fever) if the antigen titer is more than 1:160 and if the person tested had past infections or is immunized. More tests should be done since it is now 1:320. If the next titer comes back 4x higher, then the person has an active case of typhoid fever.
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.
