Indication	Blood culture	Sputum culture	Legionella urine antigen test	Pneumococcal urine antigen test	Other
Admission to intensive care unit	✓	✓	✓	✓	Endotracheal aspirate if intubated
Alcohol abuse	✓	✓	✓	✓
Asplenia	✓			✓
Cavitary infiltrates	✓	✓			Fungal and tuberculosis cultures
Chronic severe liver disease	✓			✓
Leukopenia	✓			✓
Outpatient therapy ineffective		✓	✓	✓
Pleural effusion	✓	✓	✓	✓	Thoracentesis and pleural fluid cultures
Positive Legionella urine antigen test result		✓
Positive pneumococcal urine antigen test result	✓	✓
Recent travel (within past two weeks)			✓
Severe obstructive lung disease		✓