Thyroglobulin, Fine Needle Aspiration
Commercial Mail-out Laboratory
Specimen must be non-viscous and free of particulate matter
Indicate source on test request form.
0.5 mL saline needle rinse.
Breast milk and salivary fluid. Specimens containing EDTA. Viscous
Deliver to laboratory immediately after collection.
24 hours upon receipt at reference laboratory (upon receipt in laboratory)
Thyroglobulin (Tg) is measured by the Beckman Coulter Access method.
Results obtained with different assay methods or kits cannot be used
interchangeably. The Tg result, regardless of concentration, should
not be interpreted as absolute evidence for the presence or absence of
papillary or follicular thyroid cancer. This test is FDA cleared but
is not labeled for use with FNA fluid.
The performance characteristics of this test were determined by the
Normal values are less than 10 ng/mL (Baloch ZW et al., CytoJournal
Use with FNA biopsy of thyroid nodules to diagnose benign or malignant
non-medullary thyroid nodules.
Quantitative Chemiluminescent Immunoassay