Test Details
Methodology
Double-Antibody Radioimmunoassay (RIA)
Result 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.
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
References
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 Instructions
Please refer to the Lymph Node Aspirate Collection Kit (Catalog N° 38621G, Peoplesoft N° 75203) for detailed instructions and saline solution vial.
Stability Requirements
Temperature | Period |
|---|---|
Refrigerated | 7 days |
Frozen | 200 days |
Freeze/thaw cycles | Stable x3 |
Storage Instructions
Freeze
Causes for Rejection
Nonsaline samples
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 | |
| Order Code | 502380 | |||||
| Order Code Name | Thyroglobulin, LN Aspirate | |||||
| Order Loinc | ||||||
| Result Code | 502402 | |||||
| Result Code Name | Thyroglobulin, LN Aspirate | |||||
| UofM | ng/mL | |||||
| Result LOINC | 53920-5 |