Antistreptolysin O (ASO) test is a blood test used to detect antibodies produced in response to a Streptococcus infection, such as strep throat. It helps diagnose recent or past infections and their potential complications.
Here are the basic details of the ASO Test.
Also Known As | ASO Titer Test, Antistreptolysin O Test |
Type | Blood Test |
Purpose | Detect Recent Streptococcal Infections |
Sample Type | Serum |
Preparation | No |
Fasting | Yes |
Gender | Unisex |
Age Group | All |
Normal Value | 0-200 IU/mL |
Reporting Time | Few Days |
Cost (INR) | 250-650 INR* |
*Price range may vary as per location, lab type, and procedure of lab test.
Antistreptolysin O (ASO) test is a blood test used to detect antibodies produced in response to a Streptococcus infection.
The purpose of the ASO Test is to:
Here is the basic preparation for the ASO Test.
Here is the basic ASO Test Procedure.
ASO Normal Test Report PDF Format
ASO Abnormal Test Report PDF Format
Here is the normal range of the ASO Test.
ASO Level | Normal Range |
---|---|
Adult | 0-200 IU/mL |
Here is the Interpretation of the ASO Test.
ASO Test Result | Interpretation |
---|---|
Within Normal Range | No evidence of recent streptococcal infection |
Elevated | Suggests recent or ongoing streptococcal infection |
Very High | Indicates a significant streptococcal infection or risk of complications |
Elevated or very high ASO levels may suggest a recent or ongoing streptococcal infection, including the possibility of complications like rheumatic fever.
Here are some possible causes of high ASO (Antistreptolysin O) test levels:
Possible Causes | Effect |
---|---|
Recent Streptococcal Infection | Elevated ASO levels can indicate a recent or ongoing streptococcal infection, such as strep throat. |
Post-Streptococcal Complications | High ASO levels may suggest a risk of complications like rheumatic fever or glomerulonephritis following streptococcal infections. |
Autoimmune Disorders | Some autoimmune diseases, such as systemic lupus erythematosus (SLE), can lead to elevated ASO levels. |
Normal Variation | ASO levels can naturally vary among individuals. |
Medications | Certain medications can interfere with ASO test results, potentially causing elevated levels. |
High ASO levels are often associated with streptococcal infections and related complications. Consultation with a healthcare provider is important for a definitive diagnosis and appropriate treatment.
Low ASO (Antistreptolysin O) test levels are less common, but here are some possible causes:
Possible Causes | Effect |
---|---|
Absence of Infection | Low ASO levels when there is no recent or ongoing streptococcal infection. |
No Post-Streptococcal Complications | Low ASO levels in the absence of complications following streptococcal infections. |
Normal Variation | ASO levels can naturally vary among individuals, and some may have lower baseline levels. |
Medications | Certain medications may interfere with ASO test results, potentially causing low levels. |
Low ASO levels are not commonly observed and may not always be clinically significant. If there are concerns about ASO levels, consulting with a healthcare provider can provide a better understanding of the context and any potential implications.
Here are the specimen requirements for the ASO Test.
Specimen |
Serum |
|
Volume |
2 ml |
|
Container |
Red-top tube or gel-barrier tube |
|
Collection |
Separate serum from cells within one hour of collection. Transfer to a plastic transport tube before shipping. |
|
Storage |
Room temperature |
|
Sample Stability |
Temperature |
Period |
Room temperature |
14 days |
|
Refrigerated |
14 days |
|
Frozen |
14 days |
|
Freeze/thaw cycles |
Stable x3 |
|
Causes for Rejection |
Gross hemolysis; lipemia. |
ASO test is generally safe.
Here is the basic limitation of ASO Test.
Here are some of the risk factors of the ASO Test.
Here are the Doctor's recommendations or consult a specialist after the ASO Test.
ASO Result | Doctor to Visit | Reason |
---|---|---|
High | General Practitioner | Recent streptococcal infection. |
Normal | General Practitioner | Routine health assessment. |
Low | General Practitioner | Routine health assessment. |
Please note that a General Practitioner is typically the first point of contact for routine health assessments, and they may refer you to a specialist if needed based on your specific health condition and context.
Here are the estimated ASO Test Prices in India with different top cities:
City |
Price Range (INR)* |
250-650 |
|
350-650 |
|
250-650 |
|
350-650 |
|
250-650 |
|
350-650 |
|
250-650 |
|
350-650 |
|
350-650 |
|
250-650 |
|
350-650 |
|
250-650 |
|
350-650 |
|
250-650 |
*Prices are approximate and vary depending on a specific laboratory or healthcare facility.
Summary
Overall, ASO (Antistreptolysin O) test is a valuable tool for detecting recent streptococcal infections and assessing the risk of associated complications. Also check Drlogy Test for detailed information about all medical tests for patients, doctors, scholers and medical students.
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