Book Antistreptolysin O (ASO) Antibody Test Near Me

An Antistreptolysin O (ASO) Antibody Test looks for antibodies your body makes after a strep infection. Many labs call it an ASO titer or antistreptolysin O titer. If your doctor ordered this, you can book at participating labs on LabFinder.

What is Antistreptolysin O (ASO) Antibody Test and what does it show

Some providers list it as ASO antibodies or antistreptolysin O titer. It checks your blood for antibodies to a toxin made by group A strep. Levels can help show if you had a recent strep infection that may be linked to symptoms in the heart, kidneys, joints, or skin.

Who should get a Antistreptolysin O (ASO) Antibody Test

Common reasons: follow up after suspected or confirmed strep throat or scarlet fever, check causes of joint pain, rash, or fever, look into possible rheumatic fever, or check kidney concerns after a sore throat or skin infection. Your doctor may pair this with other tests for a clearer picture.

How long does a Antistreptolysin O (ASO) Antibody Test take and what to expect

You will check in and confirm your order. A phlebotomist cleans your arm and takes a small blood sample. A bandage is placed and you can head out. Most visits take about 10 to 20 minutes from arrival to finish.

Is a Antistreptolysin O (ASO) Antibody Test safe and what are the risks

Yes, this is a quick, routine blood draw and is considered very safe. You might feel a quick pinch, notice a small bruise, or feel a little lightheaded for a moment afterward, but those effects usually fade quickly. Be sure to tell the staff if you take blood thinners, have a bleeding disorder, or if you have fainted during blood draws before. They will take extra care to keep you comfortable.

How to prepare for a Antistreptolysin O (ASO) Antibody Test

Ask about fasting: most people do not need to fast, but follow your doctor’s note. Hydrate normally: water helps with the draw. Avoid a very heavy meal right before: simple meals are fine. Tell the team about recent antibiotics: treatment timing can affect antibody levels. Bring prior results and a medication list: this helps your doctor compare trends.

Related conditions a Antistreptolysin O (ASO) Antibody Test may help evaluate

Recent strep throat or scarlet fever, rheumatic fever, post strep kidney inflammation, ongoing joint pain after a sore throat, and strep skin infections like impetigo. Results are interpreted in context. Your doctor will review your numbers along with your history and symptoms before suggesting next steps.

Tests similar to Antistreptolysin O (ASO) Antibody Test and how they differ

  • Anti DNase B antibody: another antibody to strep that can rise after throat or skin infections and may stay high when ASO is normal.
  • Throat culture or rapid strep test: looks for active strep infection now, not past infection.
  • Streptozyme test: screens for several strep antibodies at once but is less specific than single antibody tests.

Book Antistreptolysin O (ASO) Antibody Test using LabFinder

You can compare locations, see time slots, and book online at participating labs. It is easy to search for a convenient location in your area or by city or ZIP. Coverage varies by plan and provider, so check your benefits or ask the lab when you book.


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Medically Reviewed by Dr. Robert Segal, MD, FACC

Reviewed by: Dr. Robert Segal, MD, FACC

Board-Certified Physician

Last Updated: November 20, 2025

The information on this page and throughout the LabFinder website and mobile app is for general informational purposes only. It is not intended to serve as medical advice, diagnosis, or treatment. For personalized medical advice or specific health concerns, please consult your healthcare provider directly.

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Frequently Asked Questions

  • Can I book a Antistreptolysin O (ASO) Antibody Test near me?

    Booking a Antistreptolysin O (ASO) Antibody Test is easy using LabFinder. Just choose your location and enter your insurance information to find the closest Antistreptolysin O (ASO) Antibody Test near you.

  • How can I make a same-day appointment for a Antistreptolysin O (ASO) Antibody Test?

    To make a same-day appointment for a Antistreptolysin O (ASO) Antibody Test, just choose your location and your insurance information to find the closest Antistreptolysin O (ASO) Antibody Test location near you. If there's availability for a same-day appointment at a nearby lab location, then you will be able to book it easily through LabFinder.

  • Where can I schedule a Antistreptolysin O (ASO) Antibody Test?

    LabFinder allows you to easily schedule a Antistreptolysin O (ASO) Antibody Test. You can search by location and insurance to easily book a Antistreptolysin O (ASO) Antibody Test near you.

  • Can I make an appointment for Antistreptolysin O (ASO) Antibody Test online?

    LabFinder allows you to easily make an appointment for a Antistreptolysin O (ASO) Antibody Test online. To make an appointment for a Antistreptolysin O (ASO) Antibody Test online, just choose your location and your insurance information to find the closest Antistreptolysin O (ASO) Antibody Test near you.

  • Can I get a Antistreptolysin O (ASO) Antibody Test without insurance?

    Yes, you can get a Antistreptolysin O (ASO) Antibody Test without insurance. LabFinder allows you to search and select "Self-Pay" when booking a Antistreptolysin O (ASO) Antibody Test. While pricing for the test may not be immediately available, please check by calling the lab company directly for pricing.

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