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Complement Total CH50 618
Test CodeC50
Alias/See Also
C50
CPT Codes
86162
Preferred Specimen
1 mL serum
Minimum Volume
1
Instructions
Collect a red top (no gel) Send serum frozen
Transport Container
RED
Transport Temperature
F
Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 30 days
Refrigerated: Unacceptable
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Lipemia • Received thawed
Methodology
Liposome
Setup Schedule
Set up: Mon-Sat a.m.; Report available: Next day
Reference Range
31-60 U/mL
Clinical Significance
CH50 is a screening test for total complement activity. Levels of complement may be depressed in genetic deficiency, liver disease, chronic glomerulonephritis, rheumatoid arthritis, hemolytic anemias, graft rejection, systemic lupus erythematosis, acute glomerulonephritis, subacute bacterial endocarditis and cryoglobulinemia. Elevated complement may be found in acute inflammatory conditions, leukemia, Hodgkin's Disease, sarcoma, and Behcet's Disease.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153