A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Complement Component C4c
Test CodeLAB151
Quest Code
353
Alias/See Also
CC4, C4
CPT Codes
86160
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: Unacceptable
Refrigerated: 4 days
Frozen: 21 days
Refrigerated: 4 days
Frozen: 21 days
Methodology
Immunoturbidimetric
Setup Schedule
Night 6 days a week
Reference Range
Male | Female | |
<1 Year | Not established | Not established |
1-14 Years | 14-44 mg/dL | 13-46 mg/dL |
15-80 Years | 15-53 mg/dL | 15-57 mg/dL |
≥81 Years | Not established | Not established |
Clinical Significance
Decreased C4 level is associated with acute systemic lupus erythematosis, glomerulonephritis, immune complex disease, cryoglobulinemia, congenital C4 deficiency and generalized autoimmune disease.
Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130