ANTI STREPTOLYSIN- O (ASO)

The Antistreptolysin O (ASO) test measures the presence of antibodies against streptolysin O, a toxin produced by **group A streptococcus bacteria**. When a person is infected with this bacterium, their immune system produces antibodies to fight against the infection. Elevated levels of ASO in the blood indicate a recent or past **streptococcal infection**.

This test is particularly useful in diagnosing and managing conditions that may follow a strep infection, such as:

- **Rheumatic fever**: A complication that affects the heart, joints, and nervous system.
- **Post-streptococcal glomerulonephritis**: A kidney disease that can develop after a strep throat or skin infection.

While the ASO test doesn't diagnose the infection itself, it helps determine whether certain symptoms or diseases are linked to a prior streptococcal infection. It can be particularly valuable when a patient shows signs of these complications but has no active infection.

Access to ASO testing at an affordable cost, along with free home collection services, can make it easier for individuals to get tested, especially if they are managing long-term complications following a streptococcal infection.