Thyroperoxidase antibody (TPO Ab) — lab reference
In the reference guideAssay-specific. Positive result supports thyroid autoimmunity but does not determine treatment alone.
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What’s searchable?Assay-specific. Positive result supports thyroid autoimmunity but does not determine treatment alone.
Assay-specific. Also affects thyroglobulin tumor-marker interpretation.
Not a general thyroid wellness target. Use tumor follow-up, thyroid anatomy, and antibody status.
A positive ANA requires titer, pattern, symptoms, and disease-specific antibody interpretation.
Lab-specific. Interpret with symptoms, medication effects, and differential.
Altitude, smoking, hydration, androgen therapy, and pregnancy may shift values.
Consider altitude and iron/B12/folate status. Pregnancy requires trimester-specific ranges.
Hydration and altitude are major modifiers. Review alongside hemoglobin and RBC indices.
Macrocytosis and microcytosis require cause-specific interpretation.
Analyzer-specific. Review with MCV and MCHC.
Analyzer-specific; hemolysis and cold agglutinins may interfere.
Useful with MCV for mixed nutrient deficiencies and evolving anemia.
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