An autoimmune blood test measures antibodies and related findings that help investigate immune activity in different body systems. Options range from an ANA screen to focused testing for dsDNA, rheumatoid factor and CCP antibodies, thyroid peroxidase antibodies, or celiac-related tTG IgA and total IgA. Comparing them matters because the most useful measurements depend on whether the question centers on joint symptoms, thyroid concerns, digestive symptoms, or a broader antibody screen. Start by deciding whether you need a single preliminary screen, a focused antibody pair, or a panel that combines antibodies with blood counts, inflammation, or organ-related measurements.
What antibody tests are designed to measure
Antibody tests look for immune proteins that react with particular targets. ANA Screen IFA looks for antinuclear antibodies; when the screen is positive, its reflex approach adds a titer and pattern, details that help frame the result. Anti-dsDNA testing measures antibodies directed at double-stranded DNA. Rheumatoid Factor measures a different antibody-related signal, while Rheumatoid Arthritis Diagnostic Panel 1 pairs rheumatoid factor with cyclic citrullinated peptide, or CCP, IgG antibodies. Thyroid Peroxidase (TPO) Antibodies measures antibodies against thyroid peroxidase. Celiac Disease Comprehensive Panel pairs tissue transglutaminase, or tTG, IgA with total IgA, because low total IgA affects how an IgA-based antibody result is understood.
When broader results add useful perspective
Deluxe Autoimmune Testing combines ANA, rheumatoid factor, dsDNA antibodies, thyroglobulin antibodies, TPO antibodies, and complement component C3C with a complete blood count, comprehensive metabolic measurements, and sedimentation rate. Blood counts report red cells, white cells, hemoglobin, hematocrit, and platelets; changes in those results are not specific to autoimmune disease but can be useful alongside antibody findings. The metabolic portion reports electrolytes, glucose, proteins, bilirubin, ALT, AST, creatinine, blood urea nitrogen, and eGFR. C3 is a complement protein, and the sedimentation rate is an inflammation-related measurement. A broader result set needs professional review, especially when symptoms or an abnormal antibody result are present.