Immune Complexes Profile

CPT: 86332(x2)
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Test Details

Test Includes

C1q binding; immune complexes, C3d circulating


Detect circulating immune complexes (CIC)


C1q: enzyme immunoassay (EIA); C3d assay: enzyme immunoassay (EIA)

Reference Interval

See individual tests.

Specimen Requirements


Serum, frozen


Two 1 mL specimens in separate frozen tubes

Minimum Volume

Two 0.1 mL specimens in separate frozen tubes


Red-top tube or gel-barrier tube


Transfer specimen to two plastic transport tubes before freezing. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.

Storage Instructions

Freeze at -70°C or store on dry ice within six hours of collection. Specimen is stable for 14 days if stored at -70°C. Storage of specimens at -20°C will yield erroneous results.


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
054494 Immune Complexes Profile 123015 C3d Immune Complexes ug Eq/mL 10864-7
054494 Immune Complexes Profile 096933 Immune Complexes, C1q Binding ug Eq/mL 27831-7

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CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2018, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at Additional information regarding LOINC® codes can be found at, including the LOINC Manual, which can be downloaded at