General tests for most patients |
Complete blood count and differential |
International normalized ratio, prothrombin time, partial thromboplastin time |
BUN, creatinine |
Urinalysis including examination for red cell casts |
Blood cultures and testing for influenza |
BNP or N-terminal pro-BNP |
Bronchoalveolar lavage (visible hemorrhage, hemosiderin-laden macrophages, eosinophils, microbiologic cultures/immunoassays, cytology) |
Tests for immune-mediated diseases |
ANCA |
Anti-GBM antibodies |
ANA, anti-double-stranded DNA, CH50, C3, C4 |
CPK |
Anticardiolipin antibodies, anti-beta-2-glycoprotein I, and/or a lupus anticoagulant |
Rheumatoid factor |
Tests for celiac disease when idiopathic pulmonary hemosiderosis suspected |
Antitransglutaminase or antiendomysial IgA antibodies |
Miscellaneous tests based on clinical evaluation |
Antihistone antibodies |
Antistreptococcal antibodies |
Drug screen for cocaine |
Serologic test for leptospirosis |
Skin biopsy |
Lung biopsy |
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