Test	Indications
Blood typing and cross-match	For patients with hemodynamic instability from blood loss or those in whom a complete blood count reveals anemia that warrants transfusion
Chest radiography	For all patients with hemoptysis; may help localize bleeding and identify etiology; provides images for later comparison to evaluate resolution of disease
Coagulation studies	Reasonable to obtain in patients with a history of coagulopathy or current anticoagulant use
Complete blood count	Reasonable to obtain in all patients with hemoptysis to rule out thrombocytopenia and to evaluate for anemia and/or microcytosis indicative of chronic blood loss or malignancy
Renal function testing	Should be obtained before imaging with contrast media and in patients with suspected vasculitis
Sputum testing (Gram stain, acid-fast bacilli smear, fungal cultures, cytology)	Should be obtained if massive hemoptysis or an infectious etiology is suspected