Neurokinin A

Alphabetical Test listing

Neurokinin A-994

Test name:

Neurokinin A

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Substance K

Useful for:

Neurokinin A is a ten amino acid putative transmitter synthesized in the neurons it is present in. Neurokinin A is a member of the family called Tachykinins which also include Neurokinin B, Substance P, Physalaemin, and Eledoisin. Neurokinin A shares 6 of 10 peptide homologies with Neurokinin B even though they are produced by different genes. Neurokinin A is also very similar in structure to Substance P and produces some of the same biological actions as Substance P. Neurokinin A is a potent bronchoconstrictor. In the gut, Neurokinin A is produced by the intrinsic enteric nervous system.

Patient preparation information:

Patient should not be on any medications that affect hypertension, gastrointestinal functions, or pain relievers, if possible, for at least 48 hours prior to specimen collection.

Specimen type:

Plasma

Collection container:

Z-Collection plasma vial/tube Inter Science Institute

Volume:

2.0 mL

Minimum volume:

1.0 mL

Processing instructions:

Spin within two (2 hours of sample collection
Transfer 2.0 mL plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)
Freeze

Transport container:

Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Transport and stability:

Frozen (strict) - 14 days

Refrigerated - NO

Ambient - NO

Reason for rejection:

Specimen not collected in Z preservative tube.

Performing lab:

Inter Science Institute via LabCorp (847447): R-NX

Days set up:

Varies

TAT:

20 days

Method:

Direct Radioimmunoassay (RIA)

Reference ranges:

< 40 pg/mL

CPT codes:

83519

Date created:

05/05/2010

Revised date:

12/29/2023

Review date:

12/21/2023