Parathyroid Hormone, Fine Needle Aspiration (FNA)
Also known as: PTH FNA
Use
The Parathyroid Hormone, Fine Needle Aspiration (FNA) test is used to aid in the differentiation of parathyroid tissue from thyroid tissue. Parathyroid hormone (PTH) measurement is important for assessing parathyroid function, particularly in patients with thyroid nodules. This test allows for the analysis of parathyroid hormone levels in FNA fluid, contributing to clinical decision-making regarding tissue origin and differentiation.
Special Instructions
The test requires the specimen to be nonviscous, nonhemolyzed, and free of particulate matter. Specimens should be centrifuged to remove cellular material and visible hemolysis, then transferred to a standard transport tube. It is important to indicate the source on the test request form.
Limitations
This test is FDA cleared but not labeled for use with FNA fluid. The performance characteristics of this test were developed by ARUP Laboratories and are intended for clinical use in a CLIA certified laboratory. A reference interval has not been established for body fluid specimens. Grossly lipemic samples, grossly hemolyzed samples, and specimens other than those listed are considered unacceptable for testing.
New York Approved
Methodology
Immunoassay (ECLIA)
Biomarkers
LOINC Codes
- 59835-9
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Other
Volume
0.5 mL
Minimum Volume
0.5 mL
Container
ARUP standard transport tube
Collection Instructions
Fine needle aspiration in saline. Centrifuge to remove cellular material and visible hemolysis. Transfer 0.5 mL saline needle rinse to an ARUP standard transport tube.
Causes for Rejection
Specimens too viscous to be aspirated by the instrument. Grossly hemolyzed samples. Grossly lipemic samples.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 8 hours |
| Refrigerated | 24 hours |
| Frozen | 6 months |