Laboratory:
Chemical Pathology
Referral Laboratory:
MiChart Code:
Double Stranded DNA Antibody (Crithida)
Soft Order Code:
DNAIF
Synonyms:
ADNA Crithidia Assay Anti-DNA Crithidia
Anti-DNA Double Stranded (Crithidia) Anti-ds-DNA, Crithidia Screen
Crithidia DNA, Double Stranded Crithidia Screen
Double-Stranded DNA Antibody, Crithidia Screen ds-DNA, Crithidia Screen
Container:
SST tube
Normal Volume:
0.5 mL serum
Minimum Volume:
0.2 mL serum
Offsite Collection:
Collect specimen in SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.
Onsite Collection (Michigan Medicine Hospitals Only):
Collect specimen in SST tube.
Days Set Up:
Monday and Thursday
Analytic Time:
8 hours
Reference Range:
*Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Negative
Test Usage:
This assay is a more specific and less sensitive test for ds DNA antibodies than the Anti-ds-DNA by chemiluminescent assay (ADNA).
Test Methodology:
Indirect Fluorescence Antibody (IFA), Crithidia luciliae substrate
Additional Information:
If the Double-Stranded DNA antibody screen (DNAIF) is positive, a titer (DNAT) will be performed at an additional charge. By ordering this test the clinician acknowledges additional reflex testing will be performed and billed at a separate additional charge if indicated.
LOINC:
6457-6 DNA SCRN, 34187-5 DNA TTR
CPT Code:
86255
Fee Code:
21930
Reflex CPT:
86256
Reflex Fee Code:
21927
Alternate Specimen:
Red top tube.
Test ID:
109