Hypersensitivity pneumonitis is a lung inflammation caused by an allergic immune response to inhaled organic dusts, molds, and environmental allergens. It is caused by repeated exposure to allergens such as Alternaria alternata, Rhizopus nigricans, Fusarium solani, and other fungal spores that trigger antibody production. The Alternaria alternata (m6) IgG test is the most important test for identifying mold sensitization that causes this condition.
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Hypersensitivity pneumonitis is caused by repeated inhalation of organic dusts, mold spores, and environmental allergens that trigger an abnormal immune response in the lungs. Common culprits include Alternaria alternata, Rhizopus nigricans, Fusarium solani, Aureobasidium pullulans, and Trichoderma viride found in damp environments, hay, bird droppings, hot tubs, and humidifiers. When you breathe in these allergens over time, your immune system produces IgG antibodies that attack lung tissue, causing inflammation in the tiny air sacs called alveoli. This is different from typical allergies because the reaction happens deep in your lungs rather than your airways, leading to breathing problems and fatigue that worsen with continued exposure.
The Alternaria alternata (m6) IgG test is the most important blood test for hypersensitivity pneumonitis because it detects antibodies to one of the most common mold triggers of this condition. This test measures your immune system's response to Alternaria alternata fungus, and elevated IgG levels indicate sensitization that can cause lung inflammation. Additional essential tests include the Aureobasidium Pullulans (m12) IgG and Rhizopus nigricans (m11) IgG tests, which identify other common mold exposures. For comprehensive screening, regional respiratory allergy panels test for multiple allergens at once based on where you live, helping pinpoint exactly which environmental triggers are affecting your lungs. These blood tests work alongside imaging studies to confirm diagnosis and guide treatment by identifying which allergens you need to avoid.
You should get tested if you experience persistent shortness of breath, dry cough, fatigue, or flu-like symptoms that worsen after being in specific environments like your basement, workplace, or areas with water damage. Pay attention if your symptoms improve when you leave these locations and return when you go back, as this pattern strongly suggests environmental allergies affecting your lungs. Testing is especially important if you work with hay, birds, wood dust, or in moldy buildings, or if you notice breathing problems that develop gradually over weeks or months. Early detection through blood testing helps identify the specific allergens causing your lung inflammation so you can avoid them before permanent scarring occurs.
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What this means
Your testosterone levels are slightly below the optimal range. While this is not necessarily cause for concern, it may contribute to occasional fatigue, reduced motivation, or lower muscle mass over time.
Recommended actions
Increase resistance or strength training
Prioritize 7–8 hours of quality sleep per night, try to reduce stress
Include more zinc- and magnesium-rich foods (like shellfish, beef, pumpkin seeds, spinach)
Consider retesting in 3–6 months
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