ASO (QUANTITATIVE)

What is an ASO Quantitative test?

The full form of the ASO test is "Antistreptolysin O." It is a blood test that determines the level of antistreptolysin O antibodies. The immune system creates these antibodies in response to streptococcal infection, which is most commonly caused by group A Streptococcus bacteria.

The ASO test is used to identify a present or recent streptococcal infection, such as strep throat. When a person becomes infected with group A Streptococcus bacteria, their immune system creates antistreptolysin O antibodies to combat the illness. These antibodies in the blood often peak a few weeks after infection and then gradually drop. It can cause symptoms such as strep throat, scarlet fever, impetigo, cellulitis, and necrotising fasciitis, as well as more serious illnesses such as toxic shock syndrome, rheumatic fever, and post-streptococcal glomerulonephritis.

ASO Quantitative test purpose?

• Diagnosing Strep Infections: It aids in the detection of a recent or continuing group A Streptococcus infection, notably in cases of strep throat.
• Monitoring Treatment: Doctors utilize the Antistreptolysin test to determine whether antibiotics are helpful in treating streptococci.
• Complications: Elevated ASO antibody levels can suggest conditions such as rheumatic fever or glomerulonephritis, allowing for early discovery and treatment.
• Ruling Out Other Conditions: The antistreptolysin test can help rule out other causes of streptococcal-like symptoms.
• Clinical Assessment: When combined with symptoms and other testing, it aids in the diagnosis and management of streptococcal-related health concerns.
• Identify complications. High ASO antibody levels have been linked to streptococcal infection sequelae such as rheumatic fever and glomerulonephritis.

Why do I need an ASO quantitative test?

The test aids in the diagnosis of a current or recent strep infection that may result in health concerns. After a strep infection, antibodies build for one week. It may rise over several weeks. Even after symptoms have subsided, ASO titers remain increased after streptococcal infection. Healthcare providers can use ASO levels to determine whether a patient has had a recent streptococcal infection, even if the illness occurred weeks or months ago.

Symptoms that may call for an ASO Quantitative test?

• Strep Throat: This is a common infection that results in a sore throat, trouble swallowing, fever, and swollen tonsils with white patches.
• Scarlet fever causes a scarlet rash, high fever, sore throat, and a "strawberry" tongue.
• Impetigo is a contagious skin condition that creates red sores or blisters, which can burst and form a yellowish crust.
• Necrotizing fasciitis is a severe and uncommon illness known as the "flesh-eating bacteria" infection. It involves bacteria spreading quickly and destructively through the deep layers of skin and soft tissue.
• Streptococcal Toxic Shock Syndrome (STSS) is an uncommon but deadly disorder in which germs release toxins into the bloodstream, causing symptoms like fever, shock, and organ failure.
• Rheumatic fever is a type of autoimmune inflammatory disease that can develop after a streptococcal throat infection. It can impact the heart, joints, skin, and brain, resulting in symptoms such as joint discomfort, fever, and cardiac issues.
• Post-Streptococcal Glomerulonephritis: An inflammatory kidney condition that can develop following a streptococcal throat or skin infection. It can cause symptoms such as black urine, edema, and elevated blood pressure.
• Sinusitis: Group A Streptococcus can cause sinus infections, resulting in facial pain, nasal congestion, and fever.
• Ear Infections: It can also induce ear infections, which cause pain and fever.
• Streptococcal Pneumonia: Although less common than other types of pneumonia, Group A Streptococcus can produce respiratory symptoms such as coughing, trouble breathing, and chest pain.

ASO Quantitative test preparation

• Hydration: Drink plenty of water before the test to help the blood drawing process go smoothly and easily.
• Relax: Stay cool and relaxed before the test to reduce stress, which can alter blood pressure and heart rate.
• Schedule: The test can be performed at any time during the day, although it is recommended that you consult with your doctor regarding the schedule.

ASO Quantitative Test Procedure

The technique is simple: your phlebotomist will clean the arm area with antiseptic and tie a tourniquet. Following that, a needle is placed into a vein and a small amount of blood is extracted into a specially designed tube. Once the blood sample has been taken, the tourniquet is removed, and a cotton ball or gauze pad is placed over the puncture site to prevent haemorrhage.

The blood sample is labelled with your details and submitted to a facility for testing. In the laboratory, the blood sample is tested to determine the level of antistreptolysin O antibodies present.

What does the ASO Quantitative test result indicate

• Normal Results: A normal or negative result indicates that the level of antistreptolysin O antibodies in the blood is within the predicted range. This means that there is no recent or ongoing streptococcal infection.
• Elevated Results: High or positive results suggest that the blood contains more antistreptolysin O antibodies than usual. This indicates that the person has had a recent or continuing group A Streptococcus infection. The particular limit for what is considered elevated varies per laboratory.
• Complications: High ASO levels indicate a streptococcal infection that may result in rheumatic fever or glomerulonephritis. More tests and clinical evaluations are recommended to diagnose these problems.

Conclusion 

The antistreptolysin test can assist in identifying recent or continuing streptococcal infections, and early intervention is critical in preventing streptococcal infection development and consequences such as rheumatic fever or glomerulonephritis. Regular ASO testing is critical for those in high-risk categories, such as children, those with a history of streptococcal infections, and those with compromised immune systems. Furthermore, if you have previously been diagnosed with streptococcal infection and are concerned about the risks, monitoring your ASO levels through routine testing can bring peace of mind and assist you and your healthcare practitioner in taking appropriate precautions.

Frequently Asked Questions

Who is at greater risk for Streptococcus bacteria?

Children, those with low immune systems, the elderly, pregnant women, and those with chronic medical issues are particularly vulnerable.

What is the ASO quantitative blood test?

The Antistreptolysin O test detects the presence of antistreptolysin O antibodies. It is used to detect new or existing infections caused by group A Streptococcus bacteria. High levels of ASO antibodies suggest a streptococcal infection, which aids in diagnosis and therapy.

What does a high blood ASO test indicate?

An elevated level of ASO antibodies suggests that you have recently had a strep infection. Such infections may include strep throat.

What does the ASO quantitative test look for?

The antistreptolysin O test detects recent or ongoing infections caused by group A Streptococcus bacteria. It assesses the level of antistreptolysin O antibodies and diagnoses streptococcal illnesses such as strep throat.

What causes the growth in ASO?

A rise in Antistreptolysin levels suggests the presence of group A Streptococcus bacteria. These bacteria generate streptolysin O, which stimulates the creation of ASO antibodies in the body.

What is the ASO Quantitative test price in Delhi?

ASO Quantitative price in Delhi generally ranges from INR 500 to INR 1000

What happens if the ASO test returns positive?

A positive ASO test suggests a recent or ongoing infection with group A Streptococcus bacteria, which is a common cause of strep throat.

Is high ASO curable?

ASO therapy does not provide a permanent cure. The continuous treatments can help to keep the patient's toxicity levels low.

What is the range of the ASO quantitative test in blood?

The normal Antistreptolysin O test result in adults should be less than 200, while children under the age of five should have less than 100. If your results surpass the usual range, it indicates the presence of a post-streptococcal complication.

What are the symptoms of a positive ASO?

Patients who test positive for ASO antibodies may have the following symptoms: Joint inflammation and pain. Elevated body temperature (fever), skin rash, and heart inflammation (carditis) cause symptoms such as shortness of breath, chest pain, irregular pulse, fatigue, and high blood pressure.

Can I schedule an ASO Quantitative near me?

Booking an Anti-Streptolysin O (ASO), Quantitative Test with City X-Ray Scan and Clinic is simple. you may get tested from the comfort of your own home. Our services are intended to be convenient and dependable, ensuring that quality healthcare is always available to you.