A TB blood test is an important tool in the fight against TB and can play a significant role in controlling the spread of this infectious disease.
A Tuberculosis (TB) blood test is a diagnostic tool used to detect TB infection. Unlike the traditional TB skin test, the blood test does not require a follow-up appointment for interpretation. The test measures the immune response to TB bacteria by detecting the release of interferon-gamma, a protein produced by the immune system in response to TB infection. Early detection of TB through this blood test can lead to timely treatment, which is crucial for preventing the spread of the disease and improving patient outcomes.
A person may need a TB blood test if they have been in close contact with someone who has TB disease or if they have symptoms that suggest TB infection, such as a persistent cough, fever, night sweats, and weight loss. Additionally, individuals who have a weakened immune system, such as those living with HIV or those who have recently immigrated from a country with a high TB prevalence may also be recommended to have the test. The test is also commonly used for healthcare workers who are at an increased risk of exposure to TB.
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