Work up should be<unk> ilored to the patient's symptoms as this disease process affects multiple organ systems due to vascular damage
ESR, CRP, WBC may or may not be elevated
Anemia may be present
Angiography revealing narrowing/occlusion of large vessels (e.g. Aorta) is the gold standard 
MRA or CTA can be used as well to appreciate vascular stenoses
Takayasu arteritis
Giant cell arteritis
Thromboangiitis obliterans 
Polyarteritis nodosa
Systemic lupus erythematosus
Raynaud’s disease
Syphilis
Thromboangiitis obliterans