ANTI-STREPTOLYSIN -“O”(ASO) TITRE (ASLO) Test Purpose

The Anti-Streptolysin O (ASO) Titre Test, also known as the ASLO Test, measures the level of antibodies produced by the body against streptolysin O, a toxin released by Group A Streptococcus bacteria. It helps determine whether a person has had a recent streptococcal infection, such as strep throat or scarlet fever.

This test is commonly used to help diagnose complications that may develop after a streptococcal infection, including rheumatic fever and post-streptococcal glomerulonephritis (kidney inflammation). Since these conditions may occur weeks after the initial infection has resolved, the ASO titre helps provide evidence of a recent streptococcal exposure when symptoms of the original infection are no longer present.

ANTI-STREPTOLYSIN -“O”(ASO) TITRE (ASLO) Test is Recommended for Individuals:

• Individuals with symptoms suggesting a recent streptococcal (strep) infection.
• People with suspected rheumatic fever.
• Patients with signs of post-streptococcal glomerulonephritis (kidney inflammation).
• Individuals experiencing unexplained joint pain, fever, or heart inflammation following a sore throat.
• Children and adults with persistent symptoms after recovering from a streptococcal infection.
• Patients whose healthcare provider wants to confirm a recent Group A Streptococcus infection.

FAQs

1. What is the ASO (ASLO) Titre Test used for?

The ASO Titre Test measures antibodies against streptolysin O toxin produced by Group A Streptococcus bacteria. It helps confirm a recent streptococcal infection and supports the diagnosis of complications such as rheumatic fever and post-streptococcal glomerulonephritis.

2. Do I need to fast before the ASO Titre Test?

No. Fasting is generally not required for the ASO Titre Test. However, follow any specific instructions provided by your healthcare provider before sample collection.

3. What does a high ASO titre mean?

A high ASO titre suggests a recent infection with Group A Streptococcus bacteria. However, it does not identify the exact location of the infection or confirm an active infection. Your doctor will interpret the result along with your symptoms and may recommend additional tests if necessary.