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HelpTest ID TGQN Thyroglobulin, Tumor Marker, Serum
Specimen Required
Only orderable as part of profile. For more information see IETG / Interference Evaluation Heterophile, Thyroglobulin Tumor Marker, Serum.
Patient Preparation: 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:
Preferred: Red top
Acceptable: None (serum gel/SST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 2.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Secondary ID
610070Useful For
Quantitative thyroglobulin measurement as a part of evaluating suspected interference from heterophile antibodies causing a falsely elevated thyroglobulin result
Specimen Type
Serum RedSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum Red | Refrigerated (preferred) | 14 days |
| Frozen | 90 days | |
| Ambient | 7 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Gross icterus | Reject |
Reference Values
Only orderable as part of profile. For more information see IETG / Interference Evaluation Heterophile, Thyroglobulin Tumor Marker, Serum.
≤33 ng/mL
Day(s) Performed
Monday through Saturday
Report Available
3 to 5 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
84432