Test Includes
Complement C3 [006452]; Complement C3a [004220]; Complement C4 [001834]; Complement C4a [004330]; dsDNA Antibody by IFA, Crithidia luciliae, with Reflex to Titer [096346]; Anti-C1Q Ab, IgG [505710]
Special Instructions
State the patient's sex and age on the test request form.
For Complement C3a [004220] and Complement C4a [004330]: Futhan preservative must be added to samples immediately after collection. Collection kits containing this preservative are available as Labcorp Part No. 78946.
Testing for Anti-C1q Ab, IgG is not approved for New York state clients.
Expected Turnaround Time
3 - 5 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Related Information
Related Documents
For more information, please view the literature below.
Specimen Requirements
Specimen
Serum, EDTA plasma with Futhan (frozen)
Volume
2 mL serum, 2 mL EDTA plasma with Futhan
Container
Gel-barrier tube, lavender-top (EDTA) tube, screw cap tube with Futhan
Test Details
Use
This profile is used to aid in monitoring treatment for Lupus patients.
Limitations
For Complement C3a [004220] and Component C4a [004330]: Results of this test are labeled for research purposes only by the assay's manufacturer. The performance characteristics of this assay have not been established by the manufacturer. The result should not be used for treatment or for diagnostic purposes without confirmation of the diagnosis by another medically established diagnostic product or procedure. The performance characteristics were determined by Labcorp.
Methodology
See individual components.
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 505770 | Lupus Monitor Profile | 006453 | Complement C3, Serum | mg/dL | 4485-9 | |
| 505770 | Lupus Monitor Profile | 004221 | Complement C3a | ng/mL | 4488-3 | |
| 505770 | Lupus Monitor Profile | 001833 | Complement C4, Serum | mg/dL | 4498-2 | |
| 505770 | Lupus Monitor Profile | 004331 | Complement C4a | ng/mL | 4501-3 | |
| 505770 | Lupus Monitor Profile | 096346 | dsDNA Crithidia luciliae IFA | 6457-6 | ||
| 505770 | Lupus Monitor Profile | 505711 | Anti-C1q Ab, IgG | 44702-9 |
| Reflex Table for dsDNA Crithidia luciliae IFA | ||||||
|---|---|---|---|---|---|---|
| Order Code | Order Name | Result Code | Result Name | UofM | Result LOINC | |
| Reflex 1 | 096347 | dsDNA Crithidia luciliae Titer | 096347 | dsDNA Crithidia luciliae Titer | 34187-5 | |
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