If your thyroglobulin range is “undetectable” (at UHN this means it is less than 0.9 Micrograms per Litre (ug/L) or below 5ug/L, and your thyroglobulin antibodies are normal, there is likely no normal thyroid tissue and no cancerous tissue found.
If your thyroglobulin range rises with time, and your TSH does not rise, there is likely some thyroid cancer which is growing.
Thyroglobulin (Tg): If the thyroid gland has been removed, the normal range is equal to, or less than 5 Micrograms per Litre (ug/L)
Below normal: 0.05 – 0.35 mlU/L
Undetectable: This means it is less than 0.05 mlU/ml
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