C3 Complement (RDL)
Also known as: Complement Component 3
Use
Measurement of C3 is used to detect individuals with inborn deficiency of this factor or those with immunologic disease in whom complement is consumed at an increased rate. These include lupus erythematosus, chronic active hepatitis, certain chronic infections, post-streptococcal and membranoproliferative glomerulonephritis, and others.
Special Instructions
This test is a component of ANA Profile 11, ANA Profile 12, ANA 12 Plus Profile, Vasculitis Panel.
Limitations
Test results may take longer if additional confirmatory or reflex tests are needed, as testing schedules may vary. Minimum volume of serum does not allow for repeat testing.
Methodology
Automated Analyzer (Turbidimetry)
Biomarkers
LOINC Codes
- 4485-9
- 4485-9
Result Turnaround Time
5-7 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL
Minimum Volume
0.3 mL
Container
Gel tube or red-top tube
Collection Instructions
Separate serum from cells within one hour. Transfer to a plastic transport tube before freezing.
Storage Instructions
Store frozen or refrigerated.
Causes for Rejection
Grossly hemolyzed; bacterial contamination; lipemic, icteric, non-serum specimen types
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 4 days |
| Refrigerated | 8 days |
| Frozen | 8 days |
Other tests from different labs that may be relevant