C1q Complement Component
Order Name
C1Q QN
Test Number: 5000360
Revision Date 02/15/2023
Test Number: 5000360
Revision Date 02/15/2023
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
C1q Complement Component
|
Radial Immunodiffusion | 4478-4 |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 1mL (0.1) | Serum | Clot Activator (SST or Red No-Gel) | Room Temperature |
| Instructions | Notes: 0.1 mL (Note: This volume Does NOT allow for repeat testing). Specimen Type: Red-top tube or gel-barrier tube Specimen Storage: Room temperature Specimen Collection: Separate serum from cells. Special Instructions: State patient's sex on the request form. Specimen Stability: Ambient: 14 days, Refrigerated : 14 days, Frozen: 14 days |
|||
| GENERAL INFORMATION | |
|---|---|
| Expected TAT | 7 - 9 days |
| Clinical Use | The complement system is critical to the inflammatory response. C1q concentrations may be decreased in patients with acquired angioedema, immune complexed induced vasculitis, and concurrent low concentrations of C1 inhibitor, carcinoma, or lymphoma. Low levels of C1q indicate either increased consumption (catabolism) or decreased synthesis. |
| Performing Labcorp Test Code | 016824 |
| Notes | Labcorp Test Code: 016824 |
| CPT Code(s) | 86160 |
| Lab Section | Reference Lab |