What tests will be done to diagnose bullous pemphigoid?

What tests will be done to diagnose bullous pemphigoid?

Your healthcare provider may recommend the following tests to confirm their diagnosis:

• Blood test. Your healthcare provider will use a small needle to draw a blood sample from a vein in your arm. They’ll send the blood sample to a laboratory for testing.
• Skin biopsy. Your healthcare provider will remove a small skin sample and send it to a laboratory for testing.