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HelpTest Code HTG2 Thyroglobulin, Tumor Marker, Serum
Ordering Guidance
For accurate analysis of patients who are known to be thyroglobulin antibody positive, order TGMS / Thyroglobulin Mass Spectrometry, Serum.
Specimen Required
Patient Preparation: Â For 12 hours before specimen collection, patient should not take multivitamins or dietary supplements (eg, hair, skin, and nail supplements) containing biotin (vitamin B7).
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Red top (serum gel/SST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
CMH COLLECTION: 3 mL in red vacutainer
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Refrigerated (preferred) | 7 days | |
| Frozen | 30 days | ||
| Ambient | 7 days |
Useful For
Follow-up of patients with differentiated thyroid cancers after thyroidectomy and radioactive iodine ablation
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Gross icterus | Reject |
Day(s) Performed
Monday through Saturday
Report Available
1 to 3 daysReporting Name
Thyroglobulin, Tumor MarkerReference Values
Thyroglobulin Tumor Marker
Athyrotic: <0.1 ng/mL
Intact thyroid ≤33 ng/mL
Thyroglobulin Antibody:
<1.8 IU/mL
Reference values apply to all ages.
Method Name
Immunoenzymatic Assay
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
84432
86800