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- Antibodies: Antibodies are protective proteins produced by your immune system. They attach to antigens (foreign substances) — such as bacteria, fungi, viruses and toxins — and remove them from your body. An antibody test looks for antibodies in your blood that responds to specific fungi (e.g. Antibodies that detect Galactomannan, a component of Aspergillus).
- Antigens: An antigen is a marker that tells your immune system whether something in your body is harmful or not. Antigens are found on fungi, viruses, bacteria, tumors and normal cells of your body. Antigen testing is used to diagnose fungal infections.
