| ANA | Antinuclear Antibody |
| ANC | Absolute Neutrophil Count |
| ANCA | Antineutrophil Cytoplasmic Antibody |
| ATG | Antithymocyte Globulin |
| C-ANCA | Cytoplasmic Antineutrophil Cytoplasmic Antibody |
| CT | Computed Tomography |
| G-CSF | Granulocyte Colony-Stimulating Factor |
| GGO | Ground-Glass Opacities |
| HIV | Human Immunodeficiency Virus |
| HRCT | High-Resolution Computed Tomography |
| IgG | Immunoglobulin G |
| IgM | Immunoglobulin M |
| MPO | Myeloperoxidase |
| PNH | Paroxysmal Nocturnal Hemoglobinuria |
| PR3 | Proteinase 3 |
| p-ANCA | Perinuclear Antineutrophil Cytoplasmic Antibody |
| T3 | Triiodothyronine |
| T4 | Thyroxine |
| TSH | Thyroid-Stimulating Hormone |
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