Used in research settings to measure Neuropeptide K levels in biological samples such as plasma, serum, or tissue homogenates. Helps investigate the role of Neuropeptide K in neurological functions, pain regulation, inflammation, and stress responses. Commonly applied in studies related to neuroendocrinology, gastrointestinal disorders, and chronic inflammatory conditions. Provides a sensitive and specific method for quantifying peptide concentration, supporting biomarker discovery and evaluation of therapeutic interventions targeting tachykinin pathways.