Thyroglobulin, Lymph Node Aspirate (Endocrine Sciences)

TEST: 502380
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CPT: 84432
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Synonyms

  • Lymph Node Aspirate

Expected Turnaround Time

3 - 15 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Related Documents

For more information, please view the literature below.

Assay Performance Summary: Thyroglobulin, LC/MS-MS

LABupdate: Enhanced Sensitivity for Thyroglobulin Antibody and Thyroglobulin by LC/MS-MS

Thyroid Testing: Assessing Thyroid Disease in Your Patients

    Specimen Requirements

    Specimen

    Lymph node aspirate in saline, frozen

    Volume

    1 mL

    Minimum Volume

    1 mL (Note: This volume does not allow for repeat testing.)

    Container

    Lymph Node Collection Kit and saline vial

    Collection

    Please refer to the Lymph Node Aspirate Collection Kit (Catalog N° 38621G, Peoplesoft N° 75203) for detailed instructions and saline solution vial.

    Storage Instructions

    Freeze

    Stability Requirements

    Temperature

    Period

    Refrigerated

    7 days

    Frozen

    200 days

    Freeze/thaw cycles

    Stable x3

    Causes for Rejection

    Nonsaline samples

    Test Details

    Use

    Indicates possible thyroid cancer recurrence in lymph nodule tissue. Results of lymph node aspirates diluted in saline should be interpreted in conjunction with fine needle aspirate cytological analysis and ultrasonography.

    Limitations

    Lower limit of quantitation (LLOQ) = 4.0 ng/mL per one FNA collection diluted in 1 mL of saline

    Methodology

    Double-Antibody Radioimmunoassay (RIA)

    References

    Borel Al, Boizel R, Faure P, et al. Significance of low levels of thyroglobulin in fine needle aspirates from cervical lymph nodes of patients with a history of differentiated thyroid cancer. Eur J Endocrinol. 2008 May;158(5):691-698.18426828

    LOINC® Map

    Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
    502380 Thyroglobulin, LN Aspirate 502402 Thyroglobulin, LN Aspirate ng/mL 53920-5

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