Different laboratory tests might be used in patients with aspiration pneumonia. Sputum analysis including  lipid laden macrophage, gram stain and culture must be done in patients with cough. ABG may show acute hypoxemia and decreased mixed venous oxygen saturation. CBC shows leukocytosis with left shift or leukopenia, anemia, or thrombocytopenia.
Lipoid pneumonia laboratory findings
Bacterial pneumonia laboratory findings
Community-acquired pneumonia laboratory findings
Lung abscess laboratory findings
Pneumonia laboratory findings
Farmer's lung laboratory findings
Hospital-acquired pneumonia laboratory findings
Lipoid pneumonia physical examination