Test ID BLOD1452 Thyroglobulin, Tumor Marker Reflex, Serum
Useful For
Reporting of accurate thyroglobulin results, depending on the antithyroglobulin antibodies status of the patient
Accurate measurement of serum thyroglobulin in patients with known or suspected antithyroglobulin autoantibodies or possible heterophile antibodies
Specimen Type
Serum RedSpecimen Required
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 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
1.25 mL
Reject Due To
Gross hemolysis | Reject |
Gross lipemia | OK |
Gross icterus | Reject |
Specimen Stability Information
Specimen Type | Temperature | Time |
---|---|---|
Serum Red | Refrigerated (preferred) | 7 days |
Frozen | 30 days | |
Ambient | 72 hours |
Day(s) Performed
Monday through Saturday
Report Available
1 to 6 daysMethod Name
HTGT: Immunoenzymatic Assay
TGMS: Tryptic Protein Fragmentation, purified with Immunocapture, Analysis by Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS) (This service is performed pursuant to an agreement with SISCAPA Assay Technologies Inc. covering US Patent 7,632,686)
Performing Laboratory

CPT Code Information
86800
84432 (if appropriate)
Testing Algorithm
This test begins with the analysis of thyroglobulin antibody by immunoassay. If the thyroglobulin antibody result is negative (<1.8 IU/mL), then thyroglobulin testing will be performed by immunoassay.
If the thyroglobulin antibody result is positive (≥1.8 IU/mL), then thyroglobulin testing will be performed by mass spectrometry.
Reporting Name
Thyroglobulin Reflex to MS or IAReference Values
THYROGLOBULIN ANTIBODY
<1.8 IU/mL
THYROGLOBULIN, TUMOR MARKER
≤33 ng/mL
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.Reflex Tests
Test ID | Reporting Name | Available Separately | Always Performed |
---|---|---|---|
HTGT | Thyroglobulin, Tumor Marker, IA, S | No | No |
TGMS | Thyroglobulin, Mass Spec., S | Yes | No |
Forms
If not ordering electronically, complete, print, and send an Oncology Test Request (T729) with the specimen.
Secondary ID
62936SANFORD INTERFACE BUILD INFORMATION
Result Code | Result Code Description |
---|---|
19794 | Thyroglobulin Antibody, S |