Interferes with serum thyroglobulin measurement. Important to request alongside thyroglobulin in differentiated thyroid cancer follow-up (falsely lowers TG if positive).
| Sex | Age | Range | Notes |
|---|---|---|---|
| All | ≥ 18 yrs | < 115 | Negative <115 IU/mL (lab-specific) |
⚠ Clinical Note
Reference ranges are indicative. Always interpret results in the context of the individual patient and local laboratory reference intervals, which may vary.