PTH, Intact, Fine Needle Aspirate : 16560

Test Code
PTHFNX or 16560

Alias/See Also
PTHI, Intact Parathyroid Hormone FNA

CPT Codes

Preferred: 1 mL fine needle aspirate (FNA) collected in sterile transport tube (Min. 0.8 mL).
Alternative Specimens:  Parathyroid-tissue washings, non-lymph node washings, non-nodal soft tissue washings or cervical node washings collected in a sterile transport tube

Transport Container
A 25-gauge needle is inserted obliquely within the transducer plane of view and moved back and forth (passes) through the nodule to compensate for patient movement and needle deflection. There is no suction device; cells move into the needle via capillary action.
After collection of the cytology samples, withdraw between 0.10 and 0.25 mL of saline up through each needle and empty this fluid back through the needle into a tube. This is the needle washing used for analysis. Repeat the passes and saline washings from the same biopsied site and empty contents into the same tube. The washes from all needles are pooled (final volume 1 mL).
Inspect specimen for visible blood or tissue contamination. If bloody, centrifuge specimen and transfer supernatant to a new tube to send to the laboratory. The supernatant, not the cellular materials, is used for analysis. If the specimen is clear, centrifugation is not necessary.
Freeze immediately and transport frozen sample to laboratory directly. Do not send specimens in glass tubes.

Transport Temperature
Frozen.  Do not send specimens in glass tubes.

Specimen Stability
Room temperature: 2 hours; Refrigerated: 48 hours; Frozen: 28 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens in glass tubes;  Any specimen type other than those listed in the preferred or other acceptable section.

Chemiluminescent Immunoassay

Setup Schedule
Sunday - Saturday

Report Available
1 day

This test will be performed using the Beckman Coulter chemiluminescent method. Values obtained from different assay methods cannot be used interchangeably. Intact PTH levels, regardless of value, should not be interpreted as absolute evidence of the presence or absence of disease.

Reference Range
≤30 pg/mL

Clinical Significance
Surgical treatment of hyperparathyroidism relies on the ability to accurately identify parathyroid tissue. The use of fine-needle aspirate (FNA) with measurement of intact parathyroid hormone (PTH) levels in suspected parathyroid cysts or adenomas is used to identify parathyroid tissue and has been proven to be a useful surgical adjunct in the treatment of hyperparathyroidism.

Performing Laboratory
med fusion

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.