C1 Esterase Inhibitor Test – Purpose, Normal Range, and Results
The C1 Esterase Inhibitor (C1-INH) Test checks the blood level and activity of a key protein that regulates swelling and inflammation. It helps diagnose hereditary angioedema (HAE), a condition causing severe swelling in the skin, gut, or airways due to low or non-functional C1-INH.
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