CH50, Total Hemolytic Complement
8 days
Quantitative liposome lysis by spectrophotometry
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Functional assay measuring overall classical pathway activity. Decreased in complement deficiencies.
Serum
1 mL
Red-top tube or gel-barrier tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
Allow specimen to clot at room temperature for 15 to 30 minutes. Remove serum after centrifugation, place in plastic transport tube and freeze. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested
| Temperature | Period |
|---|---|
| Frozen | 14 days |
| Freeze/thaw cycles | Stable x3 |