Complement

Injury	Disease	Nutrition	Poison

Symptoms	Surgery	Test	Special Topic

Overview

Risks

Results

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.

(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:

Review Date: 4/20/2005
Reviewed By: Stanford Peng, M.D., Ph.D., Division of Rheumatology, Washington University School of Medicine, St. Louis, MO. Review provided by VeriMed Healthcare Network.

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