Neurokinin A (Substance K), Plasma
Also known as: NEURO A
Use
The Neurokinin A (Substance K), Plasma test assists in the prognosis of patients with midgut neuroendocrine tumors. It is a quantitative assay that measures the level of Neurokinin A, a neuropeptide involved in various physiological processes, including the regulation of blood pressure and intestinal motility. Evaluating Neurokinin A levels can provide valuable information on the progression of neuroendocrine tumors and potentially inform treatment decisions.
Special Instructions
Prior to specimen collection, it is recommended to discontinue pain medication and any medications that affect hypertension or intestinal motility, if possible, for at least 48 hours. Specimens must be collected in a Z plasma preservative tube, which can be ordered through ARUP's eSupply or by contacting ARUP Client Services.
Limitations
This test has not been cleared or approved by the US Food and Drug Administration. The performance characteristics have been determined by Inter Science Institute. Results from different methods, laboratories, or kits are not interchangeable. Additionally, the results cannot be interpreted as conclusive evidence of the presence or absence of malignant disease.
New York Approved
Methodology
Immunoassay (RIA)
Biomarkers
LOINC Codes
- 49728-9
Result Turnaround Time
12-15 days
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
4 mL
Minimum Volume
1 mL
Container
ARUP standard transport tube
Collection Instructions
Collection must be done using a Z plasma preservative tube. After collection, separate from cells ASAP or within 10 minutes, transfer to transport tube, and freeze immediately.
Patient Preparation
Discontinue pain medication and any medications that affect hypertension or intestinal motility, if possible, for at least 48 hours prior to collection.
Storage Instructions
Store and transport specimens in a CRITICAL FROZEN state.
Causes for Rejection
Thawed specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Unacceptable |
| Refrigerated | Unacceptable |
| Frozen | 6 months |