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23086 Thyroglobulin Antibody

Thyroglobulin Antibody
Test Code: TA-TG
Synonyms/Keywords
Thyroglobulin (Tg) Antibody, Anti-Thyroglobulin Antibody, Anti-TG​
Useful For
This test is used to rule out potentially unreliable Thyroglobulin (Tg) results due to interference (endogenous Anti-thyroglobulin antibodies) in the follow-up of patients with differentiated thyroid carcinoma.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Serum​ Red Top Tube (RTT)​ Serum Separator Tube (SST)​ 1.0 mL​ 0.4 mL​ 0.3 mL​
Collection Processing Instructions
​High doses of exogenous biotin (also termed Vitamin B7, Vitamin H or Coenzyme R) may interfere with this assay. It is recommended that patients refrain from consuming any multivitamin or supplement containing biotin for at least 72 hours prior to collection of a blood sample.

Separate serum from cells within 2 hours of collection.
Specimen Stability Information
Specimen Type Temperature Time
Serum​ Refrigerate​ 7 days​
Frozen​ 6 months
Rejection Criteria
Serum not separated from cells within 2 hours
Interference
​High doses of exogenous biotin (also termed Vitamin B7, Vitamin H or Coenzyme R) may interfere with this assay
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ 1 day​ Chemiluminescent Immunoassay (Siemens, Immulite 2000)/ Immulite 2000 ​
Test Information
Anti-Tg values determined by different methods vary significantly and cannot be compared. Patients should be followed by using the same methods. Comparing anti-Tg values from different methods might lead to erroneous clinical interpretations.
 
For routine screening of auto-immune thyroid disease, anti-thyroid peroxidase antibody (Anti-TPO) is recommended.​
Reference Range Information
Performing Location Reference Range
Marshfield​ < or = 40 IU/mL (Applicable to all age groups) ​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
86800​ ​ ​ ​ ​
Synonyms/Keywords
Thyroglobulin (Tg) Antibody, Anti-Thyroglobulin Antibody, Anti-TG​
Ordering Applications
Ordering Application Description
​Cerner ​Thyroglobulin Antibody
​COM ​Thyroglobulin Antibody
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Serum​ Red Top Tube (RTT)​ Serum Separator Tube (SST)​ 1.0 mL​ 0.4 mL​ 0.3 mL​
Collection Processing
​High doses of exogenous biotin (also termed Vitamin B7, Vitamin H or Coenzyme R) may interfere with this assay. It is recommended that patients refrain from consuming any multivitamin or supplement containing biotin for at least 72 hours prior to collection of a blood sample.

Separate serum from cells within 2 hours of collection.
Specimen Stability Information
Specimen Type Temperature Time
Serum​ Refrigerate​ 7 days​
Frozen​ 6 months
Rejection Criteria
Serum not separated from cells within 2 hours
Interference
​High doses of exogenous biotin (also termed Vitamin B7, Vitamin H or Coenzyme R) may interfere with this assay
Useful For
This test is used to rule out potentially unreliable Thyroglobulin (Tg) results due to interference (endogenous Anti-thyroglobulin antibodies) in the follow-up of patients with differentiated thyroid carcinoma.
Reference Range Information
Performing Location Reference Range
Marshfield​ < or = 40 IU/mL (Applicable to all age groups) ​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ 1 day​ Chemiluminescent Immunoassay (Siemens, Immulite 2000)/ Immulite 2000 ​
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
86800​ ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.