FCIC - Clinical: Circulating Immune Complexes (CIC)

Test Catalog

Test Name

Test ID: FCIC    
Circulating Immune Complexes (CIC)

Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.

Negative                       <20 EU/mL

Borderline/Equivocal     20 – 25 EU/mL

Positive                        >25 EU/mL


Interpretation Provides information to assist in interpretation of the test results

Circulating immune complexes (CICs) are detectable in a variety of systemic disorders such as rheumatological, autoimmune, allergic diseases; viral, bacterial infections and malignancies. Although detection of CICs is neither essential nor specific for any disease, anti-C1q assay is likely to provide information regarding disease activity in lupus nephritis.