Test Overview
Test Methodology

Indirect Fluorescence Antibody (IFA), Crithidia luciliae substrate

Test Usage

This assay is a more specific and less sensitive test for ds DNA antibodies than the Anti-ds-DNA by ELISA (ADNA).

Reference Range *

Negative

Test Details
Days Set Up
Monday and Thursday
Analytic Time

8 hours

Soft Order Code
DNAIF
MiChart Code
Double Stranded DNA Antibody (Crithida)
Synonyms
  • ADNA Crithidia Assay
  • Anti-DNA Crithidia
  • Anti-DNA Double Stranded (Crithidia)
  • Anti-ds-DNA, Crithidia Screen
  • Crithidia DNA, Double Stranded
  • Crithidia Screen
  • DNAIFA
  • Double-Stranded DNA Antibody, Crithidia Screen
  • ds-DNA, Crithidia Screen
  • ANTI-DNA (CRITHIDIA)
  • DNA SCRN
  • DNA TTR
  • DNA SCREEN
  • ANTI-DNA (CRITHIDIA) TITER
Laboratory
Chemical Pathology
Section
Immunopathology
Specimen Requirements
Collection Instructions

Collect specimen in SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.

Alternate Specimen
Red top tube.
Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.2 mL serum
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.

Billing
CPT Code
86255
Fee Code
21930
Reflex CPT
86256
Reflex Fee Code
21927
LOINC
6457-6 DNA SCRN, 34187-5 DNA TTR