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Complement

Alternative Names: Complement assay; Complement proteins Normal Values: Total hemolytic complement level: 41 to 90 hemolytic units C1 esterase inhibitor level: 16 to 33 mg/dl (160 to 330 mg/L) C3 levels: males: 88 to 252 mg/dl (880 to 2520 mg/L) females: 88 to 206 mg/dl (880 to 2060 mg/L) C4 levels: males: 12 to 72 mg/dl (120 to 720 mg/L) females: 13 to 75 mg/dl (130 to 750 mg/L) Note: mg/dl = milligrams per deciliter. Text Continues Below (This test may also be reported as mg/L = milligrams per liter.) What abnormal results mean: Increased complement activity may be seen in: cancer ulcerative colitis Decreased complement activity may be seen in: hereditary angioedema cirrhosis glomerulonephritis hepatitis lupus nephritis malnutrition kidney transplant rejection systemic lupus erythematosus

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