Test Overview
Test Methodology

Indirect Fluorescent Antibody (IFA), Mouse kidney substrate

Test Usage

Rule out collagen vascular disease

Reference Range *

Negative

Test Details
Days Set Up
Wednesday
Analytic Time

8 hours

Soft Order Code
NABT
MiChart Code
Antinuclear Antibody, Tissue Substrate
Synonyms
  • NABT
  • Tissue ANA
  • Tissue, ANA
  • NABT
  • Tissue, ANA
  • NABT TTR
  • NABT PTTRN
  • NUCLEAR ANTIBODY, TISSUE
  • NAB, TISSUE TITER
  • NAB, TISSUE PATTERN
  • NAB, TISSUE TITER/PATTERN
  • NABT PTTRN
  • NABT TTR
  • NAB, TISSUE PATTERN
  • NAB, TISSUE TITER
Laboratory
Chemical Pathology
Section
Immunopathology
Specimen Requirements
Collection Instructions

Collect specimen in SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate up to 3 days. This test is performed on pediatric patients less than 18 years of age with a positive HEp-2 ANA. MLabs will perform the HEp-2 ANA test prior to performing the tissue ANA test; please include HEp-2 ANA results if this test has been performed at your institution. The tissue ANA test will NOT be performed if the HEp-2 ANA test is negative.

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

If the tissue ANA screen is positive, a titer 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. HEp-2 ANA testing is performed as the initial ANA screening test on pediatric and adult patients; this test is more sensitive than the tissue ANA. The HEp-2 also provides some useful information that the tissue ANA cannot. The tissue ANA is more specific than the HEp-2. The tissue ANA is run on all children less than 18 years of age who have a HEp-2 ANA positive homogeneous, speckled or nucleolar pattern or atypical nuclear matrix pattern at a titer of 1:80 or greater.

Billing
CPT Code
86038
Fee Code
21903
Reflex CPT
86039
Reflex Fee Code
21936