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. 1975 Aug;56(2):272–277. doi: 10.1172/JCI108090

Elevated serum thyroglobulin. A marker of metastases in differentiated thyroid carcinomas.

A J Herle, R P Uller
PMCID: PMC436584  PMID: 1150869

Abstract

The presence of human thyroglobulin (HTg) in serum of patients was identical by immunological criteria to the serum standard used in the radioimmunoassay. The serum thyroglobulin levels in untreated patients with differentiated thyroid carcinoma ranged from 22.0 to 445.0 ng/ml with a mean of 144.3 +/- 46.5 ng/ml (SEM) (n = 10). The mean serum thyroglobulin measured postoperatively in seven of these patients was 6.4 +/- 1.5 ng/ml, not statistacally different from the mean level of 5.1 +/- 0.49 ng/ml (range 0-20.7 ng/ml) observed in 71 out of 95 control subjects with detectable HTg levels. By contrast serum HTg levels were normal or undetectable in subjects with medullary carcinoma of the thyroid. HTg levels were within normal limits in sera of patients who had previously undergone successful therapy for a differentiated thyroid carcinoma and in whom no metastases could be documented. The mean level for this group was 4.9 +/- 0.51 ng/ml (n = 43). In contrast, patients with documented metastases had a mean serum thyroglobulin level of 464.9 +/- 155.6 ng/ml (n = 6). The data support the thesis that in differentiated thyroid carcinoma serum thyroglobulin levels are elevated when metastases develop after initial treatment. It is proposed that the measurement of thyroglobulin in the serum represents a simple and valuable adjunct in the posttreatment follow-up of patients with differentiated thyroid cancer.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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