A member asked:

C-1 inh is <40% of expected normal but c4 level is normal. what does this mean? also have low magnesium & vitamin d.

A doctor has provided 1 answer
Dr. Stevan Cordas answered

Specializes in Internal Medicine

Low C1 inhibitor: Either hereditary angioedema between attacks (rarely) or more likely acquired angioedema either type i or ii. See http://emedicine.Medscape.Com/article/1048887-overview.

Answered 6/17/2013

5.1k views

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