Skip to content
Blood Test Tracker

ANA Screen, IFA, With Reflex to Titer and Pattern

ANA screen; positives reflex to titer, pattern and often specific nuclear antibodies.

10 tests explainedAlso printed as ANA With Reflex, ANA Screen w/ Reflex, ANA IFA With Reflex, ANA Cascade, Antinuclear Antibody Screen With Reflex

Check your whole panel

Type the results from your report. Each one is placed on its usual range, with its status in words.

Type the results from your ANA Screen, IFA, With Reflex to Titer and Pattern report. Each one is placed on its usual range as you type.

  • IU/mL
  • AU/mL
  • AU/mL
  • AU/mL
  • AU/mL
  • AI

Nothing you type here leaves your browser. Ranges differ a little between labs, so the range on your own report is the one your result is judged against.

The 10 tests in this panel

What each one measures and the range labs usually print for adults. Ranges differ a little between labs, so the range on your own report is the one your result is judged against.

  • Antinuclear Antibodies (ANA) Screen

    A first-step blood test that looks for antibodies to the cell nucleus. A positive result is common and does not by itself mean you have an autoimmune disease.

  • ANA Titer (IFA)

    Shows how strong a positive ANA result is, written as a dilution such as 1:80 or 1:320. A bigger second number means more antibody was present.

  • ANA Pattern (ICAP)

    Describes how the antibodies in a positive ANA test look under a microscope, such as smooth, speckled or dotted. The pattern helps guide which tests come next.

  • Anti-dsDNA Antibody (quantitative)

    Antibodies that target your own DNA. A positive result is linked to lupus, and in people with lupus the level is sometimes followed over time.

    Adults
    0–4 IU/mL

  • Anti-Smith (Sm) Antibody

    Looks for antibodies to the Smith (Sm) protein. A positive result is uncommon and is most closely linked with lupus.

    Adults
    0–40 AU/mL

  • Anti-U1-RNP Antibody (RNP)

    Looks for antibodies to U1-RNP. They are most closely linked with mixed connective tissue disease and can also appear in lupus and related conditions.

  • Anti-SSA/Ro Antibody

    Looks for antibodies to the Ro (SSA) protein. They are common in Sjögren's disease and lupus, and they matter for pregnancy planning.

    Adults
    0–40 AU/mL

  • Anti-SSB/La Antibody

    Looks for antibodies to La (SSB), which often appear together with anti-Ro. They are linked to Sjögren's disease and lupus and matter for pregnancy planning.

    Adults
    0–40 AU/mL

  • Anti-Scl-70 (Topoisomerase I) Antibody

    Antibodies against an enzyme called topoisomerase I. A positive result is linked to systemic sclerosis (scleroderma), especially the diffuse form of the disease.

    Adults
    0–29 AU/mL

  • Anti-Centromere B (CENP-B) Antibody

    Measures antibodies against CENP-B, a protein at the center of chromosomes. They are linked to limited systemic sclerosis (CREST) and, in some people, to primary biliary cholangitis.

    Adults
    0–1 AI

Labs can include 3 more tests in this panel that we haven’t written up yet.