CBC-leukopenia in 25% of cases
Chemistry
CRP
LFTs
CXR-usually lower lobe consolidation, lobar or interstitial infiltrates
Sputum culture
Chlamydophila psittaci
Gram-positive
Chlamydophila pneumoniae
Streptococcus pneumoniae
Mycobacterium marinum
Staphylococcus aureus
Chlamydia trachomatis
Gram-negative