Thyroglobulin (Tg)

Thyroglobulin (Tg)

Preferred Specimen(s) 1.0 mL serum

Transport Container Plastic screw-cap vial

Transport Temperature Refrigerated 3 days

Reject Criteria

• Gross hemolysis
• Hyperlipemic

Methodology CLIA

Clinical Significance Thyroglobulin (Tg) is a secretory product only of the thyroid gland. The major clinical use of serum Tg measurement is to monitor, but not to diagnose, patients with well-differentiated thyroid cancers. The measurement of thyroglobulin, after thyroidectomy and ablation of the thyroid gland, is useful to determine metastasis. Deficient Tg synthesis is observed in infants with goitrous hypothyroidism.

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