Test ID: C4
Complement C4, Serum
Secondary ID 
A test code used for billing and in test definitions created prior to November 2011
8171
Useful For Suggests clinical disorders or settings where the test may be helpful
Investigating an undetectable total complement (CH[50])
Confirming hereditary angioedema (with low C1 inhibitor)
Assessing disease activity in systemic lupus erythematosus, proliferative glomerulonephritis, rheumatoid arthritis, and autoimmune hemolytic anemia
Method Name A short description of the method used to perform the test
Nephelometry
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
Complement C4, S
Aliases Lists additional common names for a test, as an aid in searching
C4 (4th Component of Complement), Serum
C4 (Fourth Component of Complement), Serum
C4 Complement Serum
C4, Serum
Complement C4, Serum
Fourth Component of Complement
Hereditary Angioedema Panel (3 tests)
C4 (Fourth Component of Complement), Serum
C4 Complement Serum
C4, Serum
Complement C4, Serum
Fourth Component of Complement
Hereditary Angioedema Panel (3 tests)
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