Casandra
Casandra Test Code QD21948Version 1 (DRAFT)
Performing Lab
DNA (DS) Antibody, Crithidia IFA with Reflex to Titer
Also known as: Crithidia Luciliae Substrate Assay, Double Stranded DNA Antibody, Native DNA Antibody
Clinical Use
Order TestUse
The double-stranded DNA (dsDNA) antibody detected by the Crithidia luciliae immunofluorescence assay (IFA) is clinically significant in patients with active systemic lupus erythematosus (SLE) and approximately 20% of patients with mixed connective tissue disease. A positive screening result triggers reflex testing for titer at an additional charge.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Immunoassay (Indirect Immunofluorescence)
Biomarkers
2 components
Crithidia IFA Screen • Indirect ImmunofluorescenceCrithidia IFA Titer Reflex • Indirect Immunofluorescence
Result Turnaround Time
1-4 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
1 mL
Minimum Volume
0.2 mL
Container
Red Top (No Additive)
Collection Instructions
Overnight fasting is preferred.
Patient Preparation
Overnight fasting is preferred.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 16 days |
| Frozen | 35 days |
Similar Tests
Other tests from different labs that may be relevant
dsDNA Antibody by IFA, Crithidia luciliae, with Reflex to Titer
Labcorp
Double-Stranded DNA (dsDNA) Antibody, IgG by IFA (using Crithidia luciliae)
ARUP Laboratories
Double-Stranded DNA (dsDNA) Antibody, IgG by ELISA with Reflex to dsDNA Antibody, IgG by IFA
ARUP Laboratories
DNA Double-Stranded (dsDNA) Antibodies by Crithidia luciliae IFA, IgG, Serum
Mayo Clinic Lab
Double-Stranded DNA (dsDNA) Antibodies, IgG, Serum
Mayo Clinic Lab
Anti-dsDNA (Double-stranded) Antibodies
Labcorp
Anti-dsDNA (Double-stranded) Ab by Farr method (RDL)
Labcorp
ANA by IFA, Reflex to 11-biomarker Profile, dsDNA, RNP, Sm, SS-A, SS-B, Scl-70, Chromatin, Jo-1, Centromere B, Sm/RNP, Ribosomal P by Multiplex Immunoassay
Labcorp
ANA by IFA, Reflex to 9-biomarker profile, dsDNA, RNP, Sm, SS-A, SS-B, Scl-70, Chromatin, Jo-1, Centromere B by Multiplex Immunoassay
Labcorp
Antinuclear Ab, by Multiplex Immunoassay, Reflex to 5‑biomarker profile (ENA), dsDNA, RNP, Sm, SS‑A, SS‑B
Labcorp