CPT/HCPCS
86162
Order Code
CH50
Turnaround Time
72 hours
Test Includes
Complement Total
Specimen Requirements
Specimen Source
Serum
Transport Container
(Specimen Container)
(Specimen Container)
SST (Tiger Top)
Preferred Specimens
Serum
Collection Instructions
(Transport Temperature)
(Transport Temperature)
Separate serum into a plastic tube and freeze sample within one hour of time drawn. With multiple tests, submit a separate tube for each test. Do not submit the sample in a glass tube. Transport Frozen.
Specimen Stability
| Temperature | Period |
|---|---|
| Room temperature | Unacceptable |
| Refrigerated | Unacceptable |
| Frozen | 30 days |
Test Details
Methodology
Immunoturbidimetric
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.
Reference Ranges
41.68-95.06 U/ml
