CBC, BMP, tacrolimus/cyclosporine levels
Infectious workup (including sputum and testing for opportunistic/atypical infections if indicated)
CXR, CT Chest
Advanced/inpatient workup may include:
Bronchoscopy
Biopsy
Angiography or dopplers of pulmonary vasculature
Bronchoscopy
Biopsy
Angiography or dopplers of pulmonary vasculature
Lung transplant complications
Bronchitis, Pneumonia 
Heart transplant complications
usually bacterial early in course
Kidney transplant complications
MRSA and pseudomonas common
Tracheostomy complications
Fungi, protozoa, CMV more common >6 weeks post-op