C3d Immune Complexes

Test ID: 

704761

CPT code:

86332

Synonyms:

C3d
Complement c3d
Complement c3dg
Complement ic3b
Raji cell, Quantitative

Clinical Use:

For the measurement of C3d-bound circulating immune complexes (CIC) present in human plasma or serum.

Additional Test Information:

The importance of circulating immune complexes, and their relationship to various diseases, has been the subject of study for many years. Formation of immune complexes is a protective and usually benign process of a normally functioning immune system. CIC are removed from circulation by a number of complex biochemical, enzymatic, and cellular processes. Key to all of these, however, is the complement system.

Specimen Type:

Serum or plasma, frozen

Requested Volume: 

1 mL

Minimum Volume: 

0.1 mL

Container Type: 

Red-top tube or gel-barrier tube; lavender-top (EDTA) tube is also acceptable.

Collection:

Transfer specimen to a plastic transport tube 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.

Rejection Criteria

Specimen not received frozen on dry ice

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