ASO Titre in Jamshedpur
Also called: ASO titer, ASLO, Strep A antibody test
Report
{context.blood_test.parameters} Parameters
The test at a glance
What it checks
Report delivery
Test for
Age group
Commonly advised for
What is a ASO Titre ?
Understanding The Antistreptolysin O (ASO) Titre
The Antistreptolysin O (ASO) Titre is a blood test used to detect a recent infection by Group A Streptococcus bacteria. Unlike a throat culture, which diagnoses an active strep throat infection while it is happening, the ASO Titre looks for the aftermath. It measures antibodies the body produces against "Streptolysin O," a toxic enzyme released by the bacteria. This test is primarily ordered when a patient presents with symptoms of complications that occur weeks after a strep infection—specifically Rheumatic Fever (which affects the heart and joints) or Post-Streptococcal Glomerulonephritis (a kidney disease). It is a vital tool for connecting current unexplained symptoms (like joint pain or kidney issues) to a past, perhaps untreated, strep infection.
Components Measured:
The test focuses on a specific immune marker:
Antistreptolysin O Antibodies: These are proteins created by the immune system to neutralize the toxins produced by Group A Strep bacteria.
Titre Level: The test measures the amount (titre) of these antibodies in the blood. A higher number indicates a stronger immune response, suggesting a recent or severe infection. The antibodies typically appear 1 to 3 weeks after the initial infection, peak around 3 to 5 weeks, and then gradually decline over months.
Preparation:
Preparation for an ASO Titre is simple and generally requires no special changes to your routine.
Fasting: Fasting is usually not required. You can eat and drink normally before the test.
Medications: Inform your doctor about any medications you are taking, particularly corticosteroids or antibiotics, as these can suppress the immune system and potentially lower antibody levels, leading to a false-negative result.
Recent Illness: Let the doctor know if you have had a sore throat or skin infection in the last few months, even if it seemed mild.
Procedure:
The test is a standard venous blood draw that takes only a few minutes:
A healthcare professional selects a vein, typically in the inner elbow.
The area is cleaned with an antiseptic to prevent infection.
An elastic band (tourniquet) is tied around the arm to swell the veins with blood.
A needle is inserted, and a small amount of blood is collected into a tube.
The needle is removed, and a cotton ball or bandage is applied to the site.
The sample is sent to a laboratory where it is tested for the reaction between your serum and the streptolysin antigen.
Risks:
The risks associated with an ASO Titre test are minimal:
Bruising: Minor bruising at the needle site is common but harmless.
Pain: A slight pinch during needle insertion and mild soreness afterward.
Infection: Extremely rare risk of infection at the puncture site.
Fainting: Some patients may feel lightheaded during the blood draw.
Normal Ranges:
Results are measured in International Units per milliliter (IU/mL). Reference ranges can vary slightly between laboratories, but general guidelines are:
Adults: A test is usually considered negative (normal) if the level is below 200 IU/mL.
Children (School-aged): Because children are exposed to strep bacteria more frequently, their "normal" baseline is higher. A level below 400 IU/mL is often considered normal for children (especially ages 5–15).
Infants/Toddlers: Levels are typically very low, similar to adults, as they have had less exposure.
Interpretation:
A doctor interprets ASO results in conjunction with physical symptoms. A single test result is often not enough to confirm a diagnosis; doctors look for patterns.
Negative (Low) Titre: Indicates you likely have not had a strep infection recently. However, if symptoms are strong, the doctor may repeat the test in 10 days to see if levels rise (seroconversion).
Elevated or Rising Titre: This is clinically significant.
Rheumatic Fever: High ASO combined with joint swelling, fever, or heart murmurs suggests Rheumatic Fever.
Glomerulonephritis: High ASO combined with blood in urine, swelling (edema), or high blood pressure suggests post-streptococcal kidney inflammation.
False Positives/Negatives: ASO levels might not rise if the infection was on the skin (impetigo) rather than the throat, or if antibiotics were taken early. Conversely, levels can remain elevated for months after an infection has cleared, so a high number doesn't always mean the disease is currently active—it just means it was there.
Who should take this test
The ASO Titre checks for a past throat infection with a streptococcus germ. It is advised if:
- You have joint pain and swelling after a sore throat
- You have long-standing fever with joint symptoms
- Your doctor suspects rheumatic fever
- There is a known heart valve problem under review
- A child has repeated sore throats with joint pain
ASO Titre testing in Jamshedpur
Tapadia Diagnostic Centre in Jamshedpur offers NABL-accredited ASO Titre test from a Blood sample(s). ASO titer, ASLO, Strep A antibody test is also prescribed for Fever, joint pain, chest pain, swelling, shortness of breath. Established in 1989, this doctor-led diagnostic centre ensures high accuracy. Home sample collection and walk-in facility available at our Jamshedpur center. Pay at the centre with no advance payment. Book online or visit us.
Frequently asked questions
Related Pathology Tests in Jamshedpur
Centers You Can Choose To Visit
ASO Titre in Jamshedpur
Rated 4.6 on Google
From 6,477 patient reviews across our Hyderabad centres.
Every report, kept for you
Past reports stay in your account and can be downloaded again.
NABL accredited
Every result reviewed by a qualified pathologist before it reaches you.
Four decades of practice
A family-run diagnostic centre, trusted by doctors and households since 1989
Medically Reviewed by Qualified Biochemists
ASO Titre in Other Cities
Master Health Checkup (Blood) in Jamshedpur
HIV 1 & 2 Antibodies, Serum-Elisa Method in Jamshedpur
Dengue IgG, IgM Antibodies + NS1 Antigen-Rapid, Serum in Jamshedpur
Lipoprotein A (Lp A), Serum in Jamshedpur
Erythrocyte Sedimentation Rate (ESR) in Jamshedpur
Thyroxine Total (T4), Serum in Jamshedpur
Triiodothyronine Total (T3), Serum in Jamshedpur
CA 19.9 (Pancreatic Cancer Marker), Serum in Jamshedpur
NIPT with Microdeletions in Jamshedpur
NIPT Basic in Jamshedpur
Complete Blood Picture (CBP) in Jamshedpur
Serum Phosphorus Test in Jamshedpur
TIBC in Jamshedpur
Urology Profile in Jamshedpur
Beta HCG Free, Serum (Pregnancy Test) in Jamshedpur
Viral Screening in Jamshedpur
AFP Test in Jamshedpur
Microalbuminuria test in Jamshedpur
Diabetes Testing (FBS + PLBS) in Jamshedpur
Antithrombin III in Jamshedpur
D-dimer test in Jamshedpur
Creatine Kinase (CK) Test in Jamshedpur
AST Test in Jamshedpur
Cardiac Markers in Jamshedpur
Pap Smear - LBC in Jamshedpur
DVT Profile in Jamshedpur
Bleeding Time and Clotting Time (BT & CT) in Jamshedpur
Estradiol Test in Jamshedpur
hs-CRP Test in Jamshedpur
Alkaline Phosphatase (ALP) Test in Jamshedpur
Fertility Profile in Jamshedpur
Albumin blood test in Jamshedpur
Troponin T in Jamshedpur
Infertility Profile Extended in Jamshedpur
Electrolyte Panel in Jamshedpur
Anticardiolipin Antibodies (IgG) in Jamshedpur
PSA Test in Jamshedpur
FSH Test in Jamshedpur
STD Panel in Jamshedpur
PCOS Profile in Jamshedpur
Serum Iron Test in Jamshedpur
Cardiac Profile-III in Jamshedpur
Plasma Fibrinogen Test in Jamshedpur
HBsAg Test in Jamshedpur
Cardiac Biomarker Test in Jamshedpur
Herpes Simplex Virus (HSV) Types 1 and 2 Antibody Test in Jamshedpur
Antenatal Profile in Jamshedpur
Activated Partial Thromboplastin Time in Jamshedpur
Lipid Panel in Jamshedpur
Fine Needle Aspiration Cytology in Jamshedpur
CRP test in Jamshedpur
Joint Pain / SLE / Collagen Profile-I in Jamshedpur
PAPP-A Test in Jamshedpur
Insulin Test in Jamshedpur
Triple Screen Test in Jamshedpur
Anti-HCV Test in Jamshedpur
Basic Metabolic Panel (BMP) in Jamshedpur
Very low-density lipoprotein (VLDL) test in Jamshedpur
Free Testosterone in Jamshedpur
Triglycerides Test in Jamshedpur
Quad Screen in Jamshedpur
Folic Acid in Jamshedpur
Urinalysis in Jamshedpur
CEA Test in Jamshedpur
Ferritin Test in Jamshedpur
Transferrin Saturation% in Jamshedpur
Protein C Antigen in Jamshedpur
Alpha Feto Protein (AFP) - Fluid in Jamshedpur
CPK (MB) Test in Jamshedpur
Lupus Anticoagulant Testing in Jamshedpur
Reticulocyte Count in Jamshedpur
Infertility Profile-Basic in Jamshedpur
Beta hCG Test in Jamshedpur
DIABETIC PROFILE in Jamshedpur
LH Test in Jamshedpur
Anti-Müllerian Hormone (AMH) Test in Jamshedpur
Bile Salts and Bile Pigments, Urine in Jamshedpur
HbA1c in Jamshedpur
Vitamin D (1,25-Dihydroxyvitamin D) in Jamshedpur
Liver Function Test (LFT) in Jamshedpur
Anemia Profile Basic in Jamshedpur
Rheumatoid Factor in Jamshedpur
Widal Test in Jamshedpur
Bilirubin blood test in Jamshedpur
Inhibin A, Tumor Marker, Serum in Jamshedpur
Thyroid Function Tests in Jamshedpur
eGFR in Jamshedpur
Menopause Profile in Jamshedpur
EXTENDED DIABETIC PROFILE in Jamshedpur
LDH Test in Jamshedpur
Total Cholesterol Test in Jamshedpur
Random Blood Sugar Test in Jamshedpur
Total Protein Test in Jamshedpur
RPR test in Jamshedpur
Anti-dsDNA Test in Jamshedpur
HDL Cholesterol in Jamshedpur
Blood Type Test in Jamshedpur
ASO Titre in Jamshedpur
Blood Urea(Serum) Test in Jamshedpur
Postprandial Blood Sugar Test in Jamshedpur
Back Pain Profile in Jamshedpur
ANA test in Jamshedpur
Serum Creatinine Test in Jamshedpur
PT/INR Test in Jamshedpur
Fasting Blood Sugar Test in Jamshedpur
Extended Anemia Profile III Executive in Jamshedpur
Kidney Function Test (Renal Profile) in Jamshedpur
Serum Magnesium Test in Jamshedpur
Well-woman exam in Jamshedpur
LDL cholesterol test in Jamshedpur
Prolactin Test in Jamshedpur
Malaria Blood Smear in Jamshedpur
Liver Function Test (+GGT) in Jamshedpur
TPHA Test in Jamshedpur
Hepatitis B Surface Antigen (HBsAg) Test in Jamshedpur
Antenatal Profile 2 in Jamshedpur
TSH Test in Jamshedpur
Cardiac Catheterization in Jamshedpur
Cardiolipin Antibody (IgM) in Jamshedpur
Master Health Checkup (BL+RADIO) in Jamshedpur
Calcium Profile in Jamshedpur
Coagulation Profile in Jamshedpur
Uric Acid Test in Jamshedpur
Vitamin D (25 - Hydroxy Vitamin D, Serum) in Jamshedpur
Globulin Test in Jamshedpur
Fever Profile Test in Jamshedpur
Connective Tissue Disease Profile in Jamshedpur
Calcium Blood Test in Jamshedpur
IHC in Jamshedpur
Estriol Unconjugated (E3) Test in Jamshedpur
Blood Typing in Jamshedpur
Vitamin B12 Test in Jamshedpur
Serum Cortisol in Jamshedpur
Double Marker Test in Jamshedpur
Pap Smear, Conventional in Jamshedpur
Protein S Activity in Jamshedpur
Non-Invasive Prenatal Testing (NIPT) in Jamshedpur
whole exome sequencing in Jamshedpur
Newborn Screening (NBS) in Jamshedpur
Apolipoprotein A1 (Apo A1), Serum in Jamshedpur
Apolipoprotein B (Apo B), Serum in Jamshedpur
Renal Function Test (RFT) in Jamshedpur
