C1 inhibiting factor; C1-INH
C1 esterase inhibitor: 16 to 33 milligrams per deciliter (mg/dL).
Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.
Abnormal results may be due to certain types of angioedema.
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