Igra Tb Test

An IGRA (Interferon-Gamma Release Assay) TB test is a blood test used to detect tuberculosis (TB) infection in individuals. It is an important diagnostic tool in the fight against TB, as it provides a more specific and accurate result compared to the traditional Tuberculin Skin Test (TST).

The IGRA TB test works by measuring the response of the immune system's T cells to TB-specific antigens. When a person is infected with the TB bacterium, their immune system produces interferon-gamma in response to these antigens. The IGRA test quantifies the amount of interferon-gamma released, helping to determine whether a person has been exposed to TB.

The IGRA TB test is typically recommended for individuals who are at an increased risk of TB exposure or infection. This includes healthcare workers, people with known TB contacts, and those from regions with a high TB prevalence. It is also used for immigration and healthcare worker screening.

While some tests can be conducted at home, the IGRA TB test typically requires a healthcare provider to collect the blood sample. Self-administered versions of the test are not widely available due to the need for precise handling and analysis of the blood sample.