Sample results
Immunosuppression is a weakened or reduced immune system function that decreases the body's ability to fight infections and diseases. It is caused by medications like corticosteroids and chemotherapy, diseases like HIV/AIDS, malnutrition, or cancer treatments. The QuantiFERON-TB Gold Plus test is the most important test for diagnosing immunosuppression because it measures cell-mediated immune response and includes a mitogen control that assesses overall immune capacity.
Immunosuppression is caused by medications like corticosteroids and chemotherapy drugs, diseases such as HIV/AIDS and certain cancers, malnutrition, and medical treatments including radiation therapy and organ transplant medications. Corticosteroids suppress immune cell activity, while chemotherapy destroys rapidly dividing cells including immune cells. HIV/AIDS directly attacks CD4 T-cells, the coordinators of immune defense, progressively weakening your body's ability to fight infections. Malnutrition deprives your immune system of essential nutrients like protein, zinc, and vitamins needed to produce antibodies and immune cells.
The QuantiFERON-TB Gold Plus test is the most important test for immunosuppression because it directly measures cell-mediated immune response, the frontline defense against infections. This test includes a mitogen control that specifically assesses your body's overall immune response capacity by stimulating immune cells and measuring their ability to produce interferon-gamma. Low responses indicate weakened immunity from conditions like HIV/AIDS, cancer, malnutrition, or immunosuppressive medications. The Measles Antibody (IgG) test is also essential as it measures protective antibodies, and low or absent levels signal compromised immune status and increased vulnerability to severe infections.
You should get tested if you are taking immunosuppressive medications like corticosteroids or chemotherapy, have been diagnosed with HIV/AIDS or cancer, experience frequent or severe infections that take longer to heal, are preparing for organ transplantation, or have unexplained fatigue and recurrent illnesses. Testing is especially important before starting immunosuppressive therapy to establish a baseline or if you notice infections becoming more common or difficult to clear. Early detection allows your healthcare provider to monitor your immune status and take preventive measures against serious complications.
What this means
Your test came back negative, meaning no TB infection was detected. This is the expected and healthy result, indicating your immune system has not been exposed to tuberculosis bacteria or that any previous exposure has been cleared.
Recommended actions
Continue practicing infection prevention if you work in healthcare or high-risk settings
Consider annual retesting if you work in environments with TB exposure
Seek testing promptly if you have close contact with someone diagnosed with TB
Maintain good overall health with adequate nutrition and sleep to support immune function
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Sample results
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