What are labs and workup for angioedema?

➢ Laboratory studies may be helpful, as follows: – Acute urticaria- Laboratory studies generally are not indicated – Chronic or recurrent urticaria (>6 wk) - Basic laboratory studies should include complete blood count (CBC), erythrocyte sedimentation rate (ESR), thyroid-stimulating hormone (TSH), and antinuclear antibody (ANA) ➢ Other studies that may be considered include the following: – Imaging studies - Generally not indicated unless suggested by a specific symptom or sign – Punch biopsy - If urticarial vasculitis is suspected