Neurokinin A (Substance K), Plasma

Casandra

Casandra Test Code AR49659Version 1 (DRAFT)

Performing Lab

Lab ARUP LaboratoriesLab Test ID 3000221CPT Code 83519

Neurokinin A (Substance K), Plasma

Also known as: NEURO A

Clinical Use

Order Test

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.

Test Details

New York Approved

Methodology

Immunoassay (RIA)

Biomarkers

Neurokinin A

Analyte

Neurokinin A Level • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)

LOINC Codes

Result Codes

49728-9

Result Turnaround Time

12-15 days

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.