Thyroglobulin by LCMS

Test ID: 

704359

CPT code:

84432

Clinical Use:

Measurement of thyroglobulin (Tg) is useful in the detection of residual or recurrent thyroid cancer. Many individuals develop auto-antibodies to Tg (Tg Ab) and the presence of Tg Ab interferes with the measurement of immunoassay Tg. The LC/MS/MS assay will provide quantitative measurement of Tg in the presence of Tg Ab.

Specimen Type:

Serum

Requested Volume: 

1 mL

Minimum Volume: 

0.5 mL

Container Type: 

Transport tube

Storage Instructions:

Room temperature: 6 days
Refrigerated: 7 days
Frozen: 28 days

Rejection Criteria

Hemolysis • Lipemia • Plasma • Icteric specimen