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HelpTest Code C1Q Complement C1q, Serum
Specimen Required
Patient Preparation: Fasting for 12 hours
Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge and aliquot serum into plastic vial
Children's Mercy Hospital
Note:
CMH COLLECTION: 1 mL blood in a vacutainer Preferred: Red gel Acceptable: Red
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 28 days | |
| Frozen | 28 days | ||
| Ambient | 21 days |
Useful For
Assessment of an undetectable total complement (CH50) level
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Diagnosing congenital C1 (first component of complement) deficiency
Diagnosing acquired deficiency of C1 inhibitor
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | Reject |
| Gross icterus | OK |
Day(s) Performed
Monday through Friday
Report Available
2 to 5 daysReporting Name
Complement C1q, SReference Values
12-22 mg/dL
Method Name
Nephelometry
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86160