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BloedCheckup logoBloedCheckup
  • Our tests

    Pick the blood test or package that matches your needs.

    All blood tests

    Browse every category and focus area in one overview.

    Value bundles

    Comprehensive combos curated for common health goals.

    STD Test Guide

    Find out which STD test is right for you.

    Fingerstick at home

    See all fingerstick kits you can collect and return from home.

    Urine tests

    Find urine analyses with prepaid return packaging.

    Saliva tests

    View all saliva tests.

    Stool tests

    View all stool tests.

    Custom test request

    Request a bespoke panel built around your personal needs.

  • Service & process

    Everything around ordering, collection and logistics.

    How it works

    See each step from order to results in a clear timeline.

    Locations

    Find one of 1,000+ professional blood draw locations.

    Laboratories

    Discover our ISO-certified lab partners and quality controls.

    Fasting guidance

    Check when you need to fast and how to prepare properly.

    Shipping

    Instructions for sending your sample safely to the lab.

    FAQ

    Quick answers to popular questions about ordering and testing.

  • Support & contact

    Personal advice, reviews and legal information.

    Contact

    Call or email our team for direct assistance.

    Customer reviews

    Read real experiences from customers just like you.

    Custom test request

    Request a bespoke panel built around your personal needs.

    About BloedCheckup

    Meet our team and learn about our mission.

    Returns policy

    Learn how cancelling, refunds and shipping costs work.

    Medical disclaimer

    Important medical and usage information.

    Privacy policy

    Understand how we protect and process your data.

    Terms & conditions

    Read the legal terms for our services.

  1. Home
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  3. Antistreptolysine titer ast
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Antistreptolysin Titer (ASO) - Antistreptolysine
Antistreptolysin Titer (ASO) - Antistreptolysine
Test kit

Blood collection at collection point

  • After your order you receive instructions by email
  • Make an appointment at a collection point near you
  • Blood collection at 1,000+ locations across the Netherlands

Blood collection at collection point

  • After your order you receive instructions by email
  • Make an appointment at a collection point near you
  • Blood collection at 1,000+ locations across the Netherlands
  • Receive your results digitally by email

What is Antistreptolysin Titer?

The Antistreptolysin Titer (ASO titer) measures the amount of antibodies in the blood produced against streptolysin, a toxin made by group A streptococcal bacteria. This test helps in diagnosing a recent streptococcal infection, such as strep throat or scarlet fever.

Why should you have Antistreptolysin Titer tested?

Testing the ASO titer is useful for determining whether a recent infection with streptococcal bacteria might be the cause of symptoms such as a sore throat, fever, or more complex conditions like acute rheumatic fever or glomerulonephritis, a type of kidney disease.

What does it indicate?

An elevated ASO titer indicates a recent infection with streptococci. It helps physicians identify the cause of certain symptoms and can contribute to the diagnosis of post-streptococcal conditions.

What does a high Antistreptolysin Titer mean?

A high ASO titer suggests a recent or active infection with streptococci. It may indicate complications caused by the bacteria, such as rheumatic fever or glomerulonephritis, especially if there are no clear symptoms of strep throat.

What does a low Antistreptolysin Titer mean?

A low ASO titer suggests that there has been no recent streptococcal infection. It can also mean that an infection occurred longer ago, and the body has already reduced the antibodies.

Have questions?

Check our frequently asked questions or contact us.

  • Receive your results digitally by email
  • See how it works →

    Antistreptolysin Titer (ASO)

    ASO; recent streptococcal exposure.

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    Antistreptolysin Titer (ASO) - Antistreptolysine
    Antistreptolysin Titer (ASO) - Antistreptolysine
    Test kit