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Laboratory Medicine

Test catalogue

Thyroglobulin (TG, Thyroid Cancer Monitoring)

Test Name

Thyroglobulin (TG, Thyroid Cancer Monitoring)

Gold Tube Specimen Type/Requirements

Container Type = 1 Gold Top

Minimum Volume = 3-5mL Blood

Specimen Handling

Collection Instructions: Collect 1 gold tube top(SST). Invert sample 6-8 times after collection to ensure sample is well mixed. Write your initials, date and time of collection on the collection label or requisition.

Laboratory Staff Instructions If thyroid monitoring is ordered, use codes ATG. and TG. Separate serum or plasma from cells within 2 hours of collection

Rejection Criteria: Gross hemolysis, unlabeled or samples of non sufficient quantity.

Stability: Stable for 3 days at room temperature, refrigerated 1 week and frozen 1 months

Transportation: Send sample to core lab as soon as possible.

Required Documentation

Turnaround Time (TAT)

10 days

Reference Value

Following ablation: < 5 pmol/L;

Normal population: < 53 pmol/L

Test Utilization

In case Thyroglobulin (TG) and Anti-thyroglobulin (ATG.) are ordered together, TG will be cancelled automatically in the LIS and (ATG.) will be tested only. If the (ATG.) is >50 a Thyroglobulin will be re-added automatically.

Test Code



Sandwich Immunoassay

Testing Location


Other Information

Last Updated: June 26, 2020