| Ordering Code | 436 |
|---|---|
| Test Name | Thyroglobulin Panel |
| Alias | TG & ATG Thyroglobulin & Anti-Thyroglobulin |
| Preferred Specimen | Serum |
| Preferred Container | SST (Gold) |
| Other Specimen/Container | Serum in Plain (Red), Plasma in Lithium Heparin (Green-PST), Plasma in Lithium Heparin (Dark Green-PP No Gel) |
| Optimum Volume | 1 mL |
| Handling Instructions | All specimen types must be centrifuged within 2 hours of collection. If no gel separation present in tube and testing is delayed, plasma/serum is aliquoted from cells within 2 hours of collection Keep tubes stoppered at all times. |
| Transport Requirements | Oahu: Refrigerated Airline: Refrigerated |
| Specimen Stability | Ambient: 8 Hours Refrigerated: 48 Hours Frozen: 1 Month Frozen samples should be thawed only once DO NOT use frost-free freezers. |
| Rejection Criteria | Grossly Hemolyzed, Lipemic, Icteric, Insufficient quantity, Specimen older than stability limits, Wrong specimen type |
| Avail. Stat | NO |
| Analytic Time | 1 Day |
| Methodology | Tg = Chemiluminescence Immunoassay - One-step Sandwich ATg = Chemiluminescence Immunoassay - Two step Sandwich |
Reference range(s)
The reference ranges listed below are valid on this date of September 17, 2025.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| Thyroglobulin Quant. | ALL | 1.59-50.03 | 1.59-50.03 | ng/mL | The reference... Note1 |
||||
| Anti-Thyroglobulin Ab | ALL | < 4.0 | < 4.0 | IU/mL | The presence... Note2 |
Note1:
The reference range for Thyroglobulin (TG) applies to normal euthyroid patients without TG antibodies
Completely athyreotic patients should have TG levels that are undetectable (<0.3 ng/mL). The presence of
TG antibodies greater than 4.0 IU/mL may cause falsely low TG values
.
Note2:
The presence of TG antibodies greater than 4.0 IU/mL may cause falsely low TG values..
